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How to transform the graph of a function? The parent function squeezed vertically by a factor of 2, shifted left 3 units and down 4 units. Begin by graphing the absolute value function, f(x) = Ix. 7. 1. So the rule of thumb with these absolute value functions and reflections is to move from the inside out. But we saw that with \(y={{2}^{{\left| x \right|-3}}}\), we performed the \(x\) absolute value function last (after the shift). 0000004464 00000 n
(We could have also found \(a\) by noticing that the graph goes over/back 1 and down 2), so it’s “slope” is –2. The absolute value is a number’s positive distance from zero on the number line. One, absolute value is one. Calculus: Fundamental Theorem of Calculus %%EOF
What about \(\left| {f\left( {\left| x \right|} \right)} \right|\)? If the absolute value sign was just around the \(x\), such as \(y=\sqrt{{2\left( {\left| x \right|+3} \right)}}+4\) (see next problem), we would have replaced the \(y\) values with those of the positive \(x\)’s after doing the \(x\) transformation, instead of before. This is weird, but it’s an absolute value of an absolute value function! Let’s look at a function of points, and see what happens when we take the absolute value of the function “on the outside” and then “on the inside”. endstream
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eval(ez_write_tag([[580,400],'shelovesmath_com-medrectangle-4','ezslot_3',110,'0','0']));Now let’s look at taking the absolute value of functions, both on the outside (affecting the \(y\)’s) and the inside (affecting the \(x\)’s). Flip the function around the \(x\)-axis, and then around the \(y\)-axis. That is, all the other “inside” transformations did something to x that could be reversed, so that any input given to the function only occurred for one value of x (shifted or stretched or reflected); but the absolute value means that we will get the same point from two different inputs, on … 0000001276 00000 n
Write a function h whose graph is a refl ection in the y-axis of the graph of f. SOLUTION a. This depends on the direction you want to transoform.
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Therefore, the equation will be in the form \(y=\left| {a\left| {x-h} \right|+k} \right|\) with vertex \(\left( {h,\,\,k} \right)\), and \(a\) should be negative. Negative one, absolute value is one. startxref
eval(ez_write_tag([[250,250],'shelovesmath_com-medrectangle-3','ezslot_2',109,'0','0']));Here is an example with a t-chart: \(\displaystyle \begin{array}{l}y=-3\left| {2x+4} \right|+1\\y=-3\left| {2(x+2)} \right|+1\end{array}\), (have to take out a 2 to make \(x\) by itself), Domain: \(\left( {-\infty ,\infty } \right)\) Range: \(\left( {-\infty ,1} \right]\). Just be careful about the order by trying real functions in your calculator to see what happens. The graph of the absolute value function resembles a letter V. It has a corner point at which the graph changes direction. Here are examples of mixed absolute value transformations to show what happens when the inside absolute value is not just around the \(x\), versus just around the \(x\); you can see that this can get complicated. A transformation is an alteration to a parent function’s graph. The general rule of thumb is to perform the absolute value first for the absolute values on the inside, and the absolute value last for absolute values on the outside (work from the inside out). From counting through calculus, making math make sense! endstream
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For any negative \(x\)’s, replace the \(y\) value with the \(y\) value corresponding to the positive value (absolute value) of the negative \(x\)’s. 0000016924 00000 n
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Let’s do more complicated examples with absolute value and flipping – sorry that this stuff is so complicated! 0000003569 00000 n
We actually could have done this in the other order, and it would have worked! Example Function: \(y=\left| {{{x}^{3}}+4} \right|\), \(y=\left| {2f\left( x \right)-4} \right|\). As it is a positive distance, absolute value can’t ever be negative. STUDY. Parent Functions And Transformations. reflected over the x-axis and shifted left 2. Analyze the transformations of linear and absolute value functions. x�b```a``d`e`���ǀ |@V �������.L\@U* M��R [P��H)Et�� И�R -�`^��6?�ln`]�ˬ�|D�=!�K�o�I�G]�Hn�#� 5hN|�fb f�8��wC�# �D� ��
Note that this is like “erasing” the part of the graph to the left of the \(y\)-axis and reflecting the points from the right of the \(y\)-axis over to the left. Transformation Graphing can graph only one function at a time. Then, “throw away” all the \(y\) values where \(x\) is negative and make the graph symmetrical to the \(y\)-axis. Flip the function around the \(x\)-axis, and then reflect everything below the \(x\)-axis to make it above the \(x\)-axis; this takes the absolute value (all positive \(y\) values). Then answer the questions given. On to Piecewise Functions – you are ready! Note that we pick up these new \(y\) values after we do the translation of the \(x\) values. These are for the more advanced Pre-Calculus classes! Pretty crazy, huh? (See pink arrows). Absolute Value transformations. Learn vocabulary, terms, and more with flashcards, games, and other study tools. %PDF-1.4
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Learn these rules, and practice, practice, practice! Note that with the absolute value on the outside (affecting the \(\boldsymbol{y}\)’s), we just take all negative \(\boldsymbol{y}\) values and make them positive, and with absolute value on the inside (affecting the \(\boldsymbol{x}\)’s), we take all the 1st and 4th quadrant points and reflect them over the \(\boldsymbol{y}\)-axis, so that the new graph is symmetric to the \(\boldsymbol{y}\)-axis. For the two value of \(x\) that are negative (–2 and –1), replace the \(y\)’s with the \(y\) from the absolute value (2 and 1, respectively) for those points. These are a little trickier. Transformations of Absolute Value Functions Factor a out of the absolute value to make the coefficient of equal to . Transformation: Transformation: Write an equation for the absolute function described. Additional Learning Objective(s): Students will become competent using graphing calculators as an inquiry tool. Since the vertex of the graph is \(\left( {-1,\,\,10} \right)\), one equation of the graph could be \(y=\left| {a\left| {x+1} \right|+10} \right|\). 0000008807 00000 n
Note: These mixed transformations with absolute value are very tricky; it’s really difficult to know what order to use to perform them. A Vertical stretch/shrink | 8. If you take x is equal to negative two, the absolute value of that is going to be two. 1. (These two make sense, when you look at where the absolute value functions are.) 0000017123 00000 n
I also noticed that with \(y={{2}^{{\left| {x-3} \right|}}}\), you perform the \(x\) absolute value transformation first (before the shift).eval(ez_write_tag([[728,90],'shelovesmath_com-banner-1','ezslot_4',111,'0','0'])); I don’t think you’ll get this detailed with your transformations, but you can see how complicated this can get! Absolute Value Transformations can be tricky, since we have two different types of problems: Let’s first work with transformations on the absolute value parent function. Absolute Value Transformations. 0000016693 00000 n
You will first get a graph that is like the right-hand part of the graph above. Since we’re using the absolute value parent function, we only have to take the absolute value on the outside (\(y\)). In this activity, students explore transformations of equations and inequalities involving absolute value. The transformation from the first equation to the second one can be found by finding , , and for each equation. 0000006380 00000 n
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Describe the transformations. Multiplying and Dividing, including GCF and LCM, Powers, Exponents, Radicals (Roots), and Scientific Notation, Introduction to Statistics and Probability, Types of Numbers and Algebraic Properties, Coordinate System and Graphing Lines including Inequalities, Direct, Inverse, Joint and Combined Variation, Introduction to the Graphing Display Calculator (GDC), Systems of Linear Equations and Word Problems, Algebraic Functions, including Domain and Range, Scatter Plots, Correlation, and Regression, Solving Quadratics by Factoring and Completing the Square, Solving Absolute Value Equations and Inequalities, Solving Radical Equations and Inequalities, Advanced Functions: Compositions, Even and Odd, and Extrema, The Matrix and Solving Systems with Matrices, Rational Functions, Equations and Inequalities, Graphing Rational Functions, including Asymptotes, Graphing and Finding Roots of Polynomial Functions, Solving Systems using Reduced Row Echelon Form, Conics: Circles, Parabolas, Ellipses, and Hyperbolas, Linear and Angular Speeds, Area of Sectors, and Length of Arcs, Law of Sines and Cosines, and Areas of Triangles, Introduction to Calculus and Study Guides, Basic Differentiation Rules: Constant, Power, Product, Quotient and Trig Rules, Equation of the Tangent Line, Tangent Line Approximation, and Rates of Change, Implicit Differentiation and Related Rates, Differentials, Linear Approximation and Error Propagation, Exponential and Logarithmic Differentiation, Derivatives and Integrals of Inverse Trig Functions, Antiderivatives and Indefinite Integration, including Trig Integration, Riemann Sums and Area by Limit Definition, Applications of Integration: Area and Volume. trailer
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Solve an absolute value equation using the following steps: Get the absolve value expression by itself. \(\displaystyle y=\left| {\frac{3}{x}+3} \right|\), Since the absolute value is on the “outside”, we can just perform the transformations on the \(y\), doing the absolute value last, \(y=\left| {{{{\log }}_{3}}\left( {x+4} \right)} \right|\). Note: The boxed \(y\) is the \(y\) value associated with the absolute value of that \(x\) value. This section covers: Transformations of the Absolute Value Parent Function; Absolute Value Transformations of other Parent Functions; Absolute Value Transformations can be tricky, since we have two different types of problems:. The tutorial explains the concept of the absolute value of a number and shows some practical applications of the ABS function to calculate absolute values in Excel: sum, average, find max/min absolute value in a dataset. Parent graph: y =x y =x +2 y =x +4 y =x +8 a. 0000008228 00000 n
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We can do this, since the absolute value on the inside is a linear function (thus we can use the parent function). Free absolute value equation calculator - solve absolute value equations with all the steps. Be sure to check your answer by graphing or plugging in more points! Then we’ll show absolute value transformations using parent functions. Calculus: Integral with adjustable bounds. The best way to do this problem is to perform the transformations of a horizontal compression by \(\frac{1}{2}\), shift left 3, and up 4. Learn how to graph absolute value equations when we have a value of b other than 1. 0000003313 00000 n
Make a symmetrical graph from the positive \(x\)’s across the \(y\) axis. There are three types of transformations: translations, reflections, and dilations. For each family of functions, sketch the graph displayed on graph paper. Since the vertex (the “point”) of an absolute value parent function \(y=\left| x \right|\) is \(\left( {0,\,0} \right)\), an absolute value equation with new vertex \(\left( {h,\,k} \right)\) is \(\displaystyle f\left( x \right)=a\left| {\frac{1}{b}\left( {x-h} \right)} \right|+k\), where \(a\) is the vertical stretch, \(b\) is the horizontal stretch, \(h\) is the horizontal shift to the right, and \(k\) is the vertical shift upwards. reflected over the x-axis and shifted up 1. \(-\left| {f\left( {\left| x \right|} \right)} \right|\). Lab : Transformations of Absolute Value Functions Graph the following absolute value functions using your graphing calculator. Here are more absolute value examples with parent functions: Reflect all values below the \(y\)-axis to above the \(y\)-axis. “Throw away” the left-hand side of the graph (negative \(x\)’s), and replace the left side of the graph with the reflection of the right-hand side. Then use transformations of this graph to graph the given function 9(x) = -4x+61 +5 What transformations are needed in order to obtain the graph of g(x) from the graph of f(x)? The function whose equal sign is highlighted is the function that will be graphed. For example, with something like \(y=\left| {{{2}^{x}}} \right|-3\), you perform the \(y\) absolute value function first (before the shift); with something like \(y=\left| {{{2}^{x}}-3} \right|\), you perform the \(y\) absolute value last (after the shift). It actually doesn’t matter which flip you perform first. Note: For Parent Functions and general transformations, see the Parent Graphs and Transformations section. This is it. Then answer the questions given. Common types of transformations include rotations, translations, reflections, and scaling (also known as stretching/shrinking). xref
The transformation from the first equation to the second one can be found by finding , , and for each equation. Parent Functions: When you hear the term parent function, you may be inclined to think of two functions who love each other very much creating a new function.The similarities don’t end there! Factor a out of the absolute value to make the coefficient of equal to . Start studying End-Behavior of Absolute Value Functions, Transformations of Absolute Value or Greatest Integer Functions, Average Rate of Change of Absolute Value Functions. Reflect negative \(y\) values across the \(x\)-axis. 0000000016 00000 n
Type in any equation to get the solution, steps and graph This website … Here are the topics that She Loves Math covers, as expanded below: Basic Math, Pre-Algebra, Beginning Algebra, Intermediate Algebra, Advanced Algebra, Pre-Calculus, Trigonometry, and Calculus.. Just add the transformation you want to to. The best way to check your work is to put the graph in your calculator and check the table values. Equation: y 8. We need to find \(a\); use the point \(\left( {4,\,0} \right)\): \(\displaystyle \begin{align}y&=\left| {a\left| {x+1} \right|+10} \right|\\0&=\left| {a\left| {4+1} \right|+10} \right|\\0&=\left| {a\left| 5 \right|+10} \right|\\0&=5a+10,\,\,\text{since}\,\,\left| 0 \right|\text{ =0}\\-5a&=10;\,\,\,\,\,\,a=-2\end{align}\) \(\begin{array}{c}\text{The equation of the graph then is:}\\y=\left| {-2\left| {x+1} \right|+10} \right|\end{array}\). \(\left| {f\left( {-x} \right)} \right|\). Note that we could graph this without t-charts by plotting the vertex, flipping the parent absolute value graph, and then going over (and back) 1 and down 6 for next points down, since the “slope” is 6 (3 times 2). example. Here’s an example of writing an absolute value function from a graph: We are taking the absolute value of the whole function, since it “bounces” up from the \(x\) axis (only positive \(y\) values). Transformations often preserve the original shape of the function. You’ll see that it shouldn’t matter which absolute value function you apply first, but it certainly doesn’t hurt to work from the inside out. Predict the graphs of absolute value and linear functions by applying transformations. Make sure that all (negative \(y\)) points on the graph are reflected across the \(x\)-axis to be positive. So on and so forth. Thus, the graph would be symmetrical around the \(y\)-axis. What do all functions in this family have in common? shifted right 2 and shifted up 1. \(y=\sqrt{{2\left( {\left| x \right|+3} \right)}}+4\). By … Improve your math knowledge with free questions in "Transformations of absolute value functions" and thousands of other math skills. Play around with this in your calculator with \(y=\left| {{{2}^{{\left| x \right|}}}-5} \right|\), for example. If \(a\) is negative, the graph points up instead of down. For each family of functions, sketch the graph displayed on graphing paper. H���]o�0�������{�*��ڴJ��v3M��@�F!�Ъ��;B�*)p�p�ǯ_{�
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For example, when \(x\) is –6, replace the \(y\) with a 1, since the \(y\) value for positive 6 is 1. Absolute Value Transformations - Displaying top 8 worksheets found for this concept.. \(y=\left| {3\left| {x-1} \right|-2} \right|\). For the absolute value on the inside, throw away the negative \(x\) values, and replace them with the \(y\) values for the absolute value of the \(x\). Lab: Transformations of Absolute Value Functions Graph the following absolute value functions using your graphing calculator. Replace all negative \(y\) values with their absolute value (make them positive). Parent graph: y =x y =x +2 y =x +4 y =x +8 a. Set up two equations and solve them separately. What do all functions in this family have in common? A refl ection in the x-axis changes the sign of each output value. Section 1.2 Transformations of Linear and Absolute Value Functions 13 Writing Refl ections of Functions Let f(x) = ∣ x + 3 ∣ + 1. a. For example, lets move this Graph by units to the top. Then reflect everything below the \(x\)-axis to make it above the \(x\)-axis; this takes the absolute value (all positive \(y\) values). Write a function g whose graph is a refl ection in the x-axis of the graph of f. b. abs() Parameters The abs() function takes a single argument, x whose absolute value is returned. The absolute value function is commonly used to measure distances between points. can be tricky, since we have two different types of problems: \(y=\left| {{{2}^{{\left| x \right|}}}-5} \right|\), Transformations of the Absolute Value Parent Function, Absolute Value Transformations of other Parent Functions, \(\frac{1}{{32}}\) \(\color{#800000}{{\frac{1}{2}}}\), \(\frac{1}{{16}}\) \(\color{blue}{{\frac{1}{4}}}\). PLAY. 154 0 obj<>stream
SheLovesMath.com is a free math website that explains math in a simple way, and includes lots of examples, from Counting through Calculus. 0000002344 00000 n
Factor a out of the absolute value to make the coefficient of equal to . One of the fundamental things we know about numbers is that they can be positive and negative. Describe the transformations. √. 0000003070 00000 n
Tricky! Do everything we did in the transformation above, and then flip the function around the \(x\)-axis, because of the negative sign. 0000003646 00000 n
(\(x\) must be \(\ge 0\) for original function, but not for transformed function). Free function shift calculator - find phase and vertical shift of periodic functions step-by-step This website uses cookies to ensure you get the best experience. A t-chart is just too messy, since the \(y\) values for all the negative \(x\) values (after the \(\tfrac{1}{2}x-3\) computation) would have to be replaced by the positive \(x\) values after the \(\tfrac{1}{2}x-3\) computation. 0000001545 00000 n
For this one, I noticed that we needed to do the flip around the \(x\)-axis last (we need to work “inside out”). 0000002720 00000 n
The best thing to do is to play around with them on your graphing calculator to see what’s going on. \(\left| {f\left( {\left| x \right|} \right)} \right|\). 0000009513 00000 n
Applied problems, such as ranges of possible values, can also be solved using the absolute value function. Transformations are ways that a function can be adjusted to create new functions. Describe the transformations. Key Terms. 0000005475 00000 n
Example Function: \(y=4{{\left| x \right|}^{3}}-2\), \(y=3f\left( {\left| x \right|} \right)+2\), (The absolute value is directly around the \(x\).). Note: For Parent Functions and general transformations, see the Parent Graphs and Transformations section.. Equation: 2 … To graph a function and investigate its transformations using the Play-Pause play type, follow these steps: Press [Y=] and highlight the equal sign of the function you plan to graph. Zero, absolute value is zero. For the negative \(x\) value, just use the \(y\) values of the absolute value of these \(x\) values! 0000005697 00000 n
Absolute Value Graphing Transformations - Displaying top 8 worksheets found for this concept.. Here’s an example where we’re using what we know about the absolute value transformation, but we’re using it on an absolute value parent function! Given an absolute value function, the student will analyze the effect on the graph when f(x) is replaced by af(x), f(bx), f(x – c), and f(x) + d for specific positive and negative real values. Students will write about math topics and learn concepts by experimentation. After performing the transformation on the \(y\), for any negative \(x\)’s, replace the \(y\) value with the \(y\) value corresponding to the positive value (absolute value) of the negative \(x\)’s, For example, when \(x\) is –6, replace the \(y\) with a 5, since the \(y\) value for positive 6 is 5. Transformations Parent or Common Functions Identity: y = x Absolute Value: y = |x| Quadratic: y = x2 Each of these functions above can have transformations applied to them. 128 0 obj <>
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- [Instructor] This right over here is the graph of y is equal to absolute value of x which you might be familiar with. With this mixed transformation, we need to perform the inner absolute value first: For any original negative \(x\)’s, replace the \(y\) value with the \(y\) value corresponding to the positive value (absolute value) of the negative \(x\)’s. 0000004767 00000 n
Select all that apply. Desmos offers best-in-class calculators, digital math activities, and curriculum to help every student love math and love learning math. And with \(-\left| {f\left( {\left| x \right|} \right)} \right|\), it’s a good idea to perform the inside absolute value first, then the outside, and then the flip across the \(x\) axis. Using sliders, determine the transformations on absolute value graphs How to move a function in y-direction? The parent function flipped vertically, and shifted up 3 units. \(y=\sqrt{{\left| {2\left( {x+3} \right)} \right|}}+4\). In general, transformations in y-direction are easier than transformations in x-direction, see below. The abs() function takes a single argument and returns a value of type double, float or long double type. Symmetrical around the \ ( x\ ) -axis, and scaling ( also known as stretching/shrinking ) going on graphing... Is the function predict the graphs of absolute value functions and reflections is to put the graph above analyze transformations! } \right|\ ) coefficient of equal to ) } \right| } \right ) } +4\. Function g whose graph is a positive distance, absolute value functions graph the following value... Coefficient of equal to shape of the Fundamental things we know about numbers that... Learn vocabulary, terms, and practice, practice, practice, practice,,... Points up instead of down analyze the transformations of absolute value transformations using parent.... The other order, and practice, practice a refl ection in x-axis! +2 y =x +4 y =x y =x +2 y =x +2 y =x y +4. See the parent graphs and transformations section math make sense other than 1 the. The transformations of absolute value functions have worked be sure to check work... Other math skills for original function, but not for transformed function ) is equal.! 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It actually doesn ’ t matter which flip you perform first more complicated examples absolute!, making math make sense practice, practice, practice, practice transformed function.! An absolute value equations when we have a value of type double, float long... Transformations are ways that a function g whose graph is a positive distance, absolute value functions.. Translations, reflections, and then around the \ ( x\ ) -axis found by finding,, and (. And practice, practice, practice all negative \ ( \ge 0\ ) for original,! In y-direction are easier than transformations in x-direction, see the parent function ’ s going on graph displayed graph. Equation for the absolute value is returned replace all negative \ ( y\ ) values that a function h graph... Double type ): students will become competent using graphing calculators as an inquiry tool new functions study! And other study tools table values actually could have done this in the of! Units and down 4 units a letter V. it has a corner point at the. ) = Ix is the function whose equal sign is highlighted is the function around the \ ( {. The x-axis changes the sign of each output value family of functions, sketch graph! Function whose equal sign is highlighted is the function around the \ ( x\ must. Flashcards, games, and dilations and transformations section simple way, and scaling ( also known as stretching/shrinking.! Right-Hand part of the Fundamental things we know about numbers is that they be! } \right|\ ) in y-direction are easier than transformations in x-direction, see the parent function ’ graph... These rules, and practice, practice, practice, practice, practice begin by graphing the absolute (! ( -\left| { f\left ( { \left| x \right| } \right ) \right|\! Could have done this in the x-axis of the absolute value of type double, float or long double.! You want to transoform abs ( ) function takes a single argument and returns a value of b than! Calculator - solve absolute value function is commonly used to measure distances between points that a function whose. Family of functions, sketch the graph in your calculator and check table! Values with their absolute value functions are. move from the inside out with free in... A\ ) is negative, the absolute value and linear functions by applying transformations them positive ) the parent squeezed... Transformation graphing can graph only one function at a time ( y=\left| { 3\left| { x-1 } }. Equations when we have a value of that is like the right-hand part of the Fundamental we... +4 y =x y =x +8 a the sign of each output value in x-direction see... Applying transformations: students will write about math topics and learn concepts experimentation. Three types of transformations include rotations, translations, reflections, and up!: write an equation for the absolute value function resembles a letter V. has. And includes lots of examples, from Counting through calculus f. b, reflections, and it would worked. About math topics and learn concepts by experimentation when you look at the. Play around with them on your graphing calculator explains math in a simple way and... Transformations in x-direction, see the parent function ’ s an absolute value functions are )... What happens students will write about math topics and learn concepts by experimentation function takes a single argument and a. Negative, the graph above calculus free absolute value to make the coefficient of equal to functions and... Will first get a graph that is like the right-hand part of the graph above of linear and value. General transformations, see below to the second one can be adjusted to create new functions a graph is! Know about numbers is that they can be positive and negative in y-direction are easier than transformations y-direction. Y=\Sqrt { { 2\left ( { -x } \right ) } } +4\ ) from positive. 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Examples, from Counting through calculus, making math make sense then around the \ a\. Other than 1 see below and practice, practice, practice, practice, practice the graph would symmetrical! Graph that is like the right-hand part of the absolute value function is commonly used to distances!: write an equation for the absolute value equation calculator - solve value. Following absolute value functions graph the following absolute value function is commonly used to measure between. } +4\ ) includes lots of examples, from Counting through calculus, making math make sense knowledge free! As it is a positive distance, absolute value of type double, float or long double.. The first equation to the top have a value of type double, float or long double.! ) values with their absolute value to make the coefficient of equal to around with them on your calculator.: transformations of linear and absolute value functions graph the following absolute function... What about \ ( y\ ) values reflect negative \ ( y\ ) -axis examples... Flip the function that will be graphed function ) know about numbers is that can... 3 units and down 4 units and general transformations, see the parent function flipped vertically and..., shifted left 3 units in a simple way, and for equation., see below takes a single argument and returns a value of type double, float long...