# vertical stretch equation

y = c f(x), vertical stretch, factor of c; y = (1/c)f(x), compress vertically, factor of c; y = f(cx), compress horizontally, factor of c; y = f(x/c), stretch horizontally, factor of c; y = - … Cubic—translated left 1 and up 9. Radical—vertical compression by a factor of & translated right . When an equation is transformed vertically, it means its y-axis is changed. Use up and down arrows to review and enter to select. Ok so in this equation the general form is in y=ax^2+bx+c. we say: vertical scaling: Then, the new equation is. For equation : Vertical stretch by a factor of 3: This means the exponential equation will be multiplied by a constant, in this case 3. (They can also arise in other contexts, such as logarithms, but you'll almost certainly first encounter asymptotes in the context of rationals.) To stretch a graph vertically, place a coefficient in front of the function. absolute value of the sum of the maximum and minimum values of the function. going from   [beautiful math coming... please be patient] y = (2x)^2 is a horizontal shrink. A point $\,(a,b)\,$ on the graph of $\,y=f(x)\,$ moves to a point $\,(k\,a,b)\,$ on the graph of, DIFFERENT WORDS USED TO TALK ABOUT TRANSFORMATIONS INVOLVING $\,y\,$ and $\,x\,$, REPLACE the previous $\,x$-values by $\ldots$, Make sure you see the difference between (say), we're dropping $\,x\,$ in the $\,f\,$ box, getting the corresponding output, and. Vertical/Horizontal Stretching/Shrinking usually changes the shape of a graph. stretching the graphs. Now, let's practice finding the equation of the image of y = x 2 when the following transformations are performed: Vertical stretch by a factor of 3; Vertical translation up 5 units; Horizontal translation left 4 units; a – The image is not reflected in the x-axis. Absolute Value—reflected over the x axis and translated down 3. The graph of y=x² is shown for reference as the yellow curve and this is a particular case of equation y=ax² where a=1. Answer: 3 question What is the equation of the graph y= r under a vertical stretch by the factor 2 followed by a horizontal translation 3 units to the left and then a vertical translation 4 units down? This transformation type is formally called, IDEAS REGARDING HORIZONTAL SCALING (STRETCHING/SHRINKING). Featured on Sparknotes. Linear---vertical stretch of 8 and translated up 2. Replacing every $\,x\,$ by One simple kind of transformation involves shifting the entire graph of a function up, down, right, or left. In the equation $$f(x)=mx$$, the $$m$$ is acting as the vertical stretch or compression of the identity function. The simplest shift is a vertical shift, moving the graph up or down, because this transformation involves adding a positive or negative constant to the function.In other words, we add the same constant to the output value of the function regardless of the input. Vertical stretch and reflection. coefficient into the function, whether that coefficient fronts the equation as altered this way: y = f (x) = sin(cx) . This causes the $\,x$-values on the graph to be MULTIPLIED by $\,k\,$, which moves the points farther away from the $\,y$-axis. This is a transformation involving $\,x\,$; it is counter-intuitive. Vertical asymptotes are vertical lines which correspond to the zeroes of the denominator of a rational function. The graph of $$g(x) = 3\sqrt{x}$$ is a vertical stretch of the basic graph $$y = \sqrt{x}$$ by a factor of $$3\text{,}$$ as shown in Figure262. sine function is 2Π. ... What is the vertical shift of this equation? This moves the points farther from the $\,x$-axis, which tends to make the graph steeper. horizontal stretching/shrinking changes the $x$-values of points; transformations that affect the $\,x\,$-values are counter-intuitive. If c is negative, the function will shift right by c units. You must multiply the previous $\,y$-values by $\frac 14\,$. Khan Academy is a 501(c)(3) nonprofit organization. Do a horizontal stretch; the $\,x$-values on the graph should get multiplied by $\,2\,$. and multiplying the $\,y$-values by $\,3\,$. Consider the functions f f and g g where g g is a vertical stretch of f f by a factor of 3. give the new equation $\,y=f(\frac{x}{k})\,$. on the graph of $\,y=kf(x)\,$. (that is, transformations that change the $\,y$-values of the points), In the case of these are the same function. Tags: Question 11 . This is a vertical stretch. Another common way that the graphs of trigonometric When $$m$$ is negative, there is also a vertical reflection of the graph. causes the $\,x$-values in the graph to be DIVIDED by $\,3$. Thus, the graph of $\,y=f(3x)\,$ is the same as the graph of $\,y=f(x)\,$. Thus, the graph of $\,y=\frac13f(x)\,$ is found by taking the graph of $\,y=f(x)\,$, period of the function. Horizontal shift 4 units to the right: y = 4x^2 is a vertical stretch. reflection x-axis and vertical stretch. Thus, the graph of $\,y=3f(x)\,$ is found by taking the graph of $\,y=f(x)\,$, Rational—vertical stretch by 8 Quadratic—vertical compression by .45, horizontal shift left 8. Vertical Stretching and Shrinking of Quadratic Graphs A number (or coefficient) multiplying in front of a function causes a vertical transformation. Replacing every $\,x\,$ by $\,\frac{x}{3}\,$ in the equation causes the $\,x$-values on the graph to be multiplied by $\,3\,$. - the answers to estudyassistant.com Vertical stretch: Math problem? The $\,y$-values are being multiplied by a number greater than $\,1\,$, so they move farther from the $\,x$-axis. horizontal stretch. y = f (x) = sin(2x) and y = f (x) = sin(). if by y=-5x-20x+51 you mean y=-5x^2-20x+51. Transformations: vertical stretch by a factor of 3 Equation: =3( )2 Vertex: (0, 0) Domain: (−∞,∞) Range: [0,∞) AOS: x = 0 For each equation, identify the parent function, describe the transformations, graph the function, and describe the domain and range using interval notation. ), HORIZONTAL AND VERTICAL STRETCHING/SHRINKING. functions are altered is by Do a vertical shrink, where $\,(a,b) \mapsto (a,\frac{b}{4})\,$. Thus, we get. $\,y=kf(x)\,$. D. Analyze the graph of the cube root function shown on the right to determine the transformations of the parent function. Make sure you see the difference between (say) Given a quadratic equation in the vertex form i.e. Learn how to recognize a vertical stretch or compression on an absolute value equation, and the impact it has on the graph. The graph of h is obtained by horizontally stretching the graph of f by a factor of 1/c. When it is horizontally, its x-axis is modified. Points on the graph of $\,y=f(3x)\,$ are of the form $\,\bigl(x,f(3x)\bigr)\,$. In the equation the is acting as the vertical stretch or compression of the identity function. and They are one of the most basic function transformations. The first example y = (x / 3)^2 is a horizontal stretch. The graph of function g (x) is a vertical stretch of the graph of function f (x) = x by a factor of 6. This is a horizontal shrink. Given the parent function f(x)log(base10)x, state the equation of the function that results from a vertical stretch by a factor of 2/5, a horizontal stretch by a factor of 3/4, a reflection in the y-axis , a horizontal translation 2 units to the right, and If $b>1$, the graph stretches with respect to the $y$-axis, or vertically. You must multiply the previous $\,y$-values by $\,2\,$. $\,y = 3f(x)\,$, the $\,3\,$ is ‘on the outside’; g(x) = 3/4x 2 + 12. answer choices . Below are pictured the sine curve, along with the Usually c = 1, so the period of the The Rule for Vertical Stretches and Compressions: if y = f(x), then y = af(x) gives a vertical stretch when a > 1 and a vertical compression when 0 < a < 1. The transformation can be a vertical/horizontal shift, a stretch/compression or a refection. Do a vertical stretch; the $\,y$-values on the graph should be multiplied by $\,2\,$. How to you tell if the equation is a vertical or horizontail stretch or shrink?-----Example: y = x^2 y = 3x^2 causes a vertical shrink (the parabola is narrower)--y = (1/3)x^2 causes a vertical stretch (the parabola is broader)---y = (x-2)^2 causes a horizontal shift to the right.---y … For transformations involving [beautiful math coming... please be patient] [beautiful math coming... please be patient] The amplitude of y = f (x) = 3 sin(x) On this exercise, you will not key in your answer. The graph of y=ax² can be stretched by changing the value of a; in addition, a negative value of a will reflect the curve along the x-axis. Vertical Stretch or Compression In the equation $f\left(x\right)=mx$, the m is acting as the vertical stretch or compression of the identity function. It just plots the points and it connected. to   following functions, each a horizontal stretch of the sine curve: This coefficient is the amplitude of the function. of y = sin(x), they are stretches of a certain sort. To horizontally stretch the sine function by a factor of c, the function must be Compared with the graph of the parent function, which equation shows a vertical stretch by a factor of 6, a shift of 7 units right, and a reflection over the x-axis? Vertical Stretching and Shrinking are summarized in … • if k > 1, the graph of y = k•f (x) is the graph of f (x) vertically stretched by multiplying each of its y-coordinates by k. $\,y\,$ $\,y = f(3x)\,$, the $\,3\,$ is ‘on the inside’; To stretch a graph vertically, place a coefficient in front of the function. for 0 < b < 1, then (bx)^2 is a horizontal stretch (dividing x by b at the same value of y will make the x-coordinate bigger) same as a vertical shrink. $\,y = kf(x)\,$   for   $\,k\gt 0$, horizontal scaling: This means that to produce g g , we need to multiply f f by 3. Vertical Stretches and Shrinks Stretching of a graph basically means pulling the graph outwards. SURVEY . Compare the two graphs below. y = sin(3x). Stretching a graph involves introducing a then yes it is reflected because of the negative sign on -5x^2. This causes the $\,x$-values on the graph to be DIVIDED by $\,k\,$, which moves the points closer to the $\,y$-axis. Which equation describes function g (x)? reflection x-axis and vertical compression. $\,y = f(k\,x)\,$   for   $\,k\gt 0$. You may intuitively think that a positive value should result in a shift in the positive direction, but for horizontal shi… Image Transcriptionclose. When m is negative, there is also a vertical reflection of the graph. Notice that dividing the $\,x$-values by $\,3\,$ moves them closer to the $\,y$-axis; this is called a horizontal shrink. Also, by shrinking a graph, we mean compressing the graph inwards. to   $\,y\,$, and transformations involving $\,x\,$. Figure %: The sine curve is stretched vertically when multiplied by a coefficient $\,y = f(x)\,$   is three. For example, the amplitude of y = f (x) = sin (x) is one. in y = 3 sin(x) or is acted upon by the trigonometric function, as in Here is the thought process you should use when you are given the graph of $\,y=f(x)\,$. give the new equation $\,y=f(k\,x)\,$. This coefficient is the amplitude of the function. Horizontal And Vertical Graph Stretches And Compressions (Part 1) The general formula is given as well as a few concrete examples. Transforming sinusoidal graphs: vertical & horizontal stretches Our mission is to provide a free, world-class education to anyone, anywhere. we're multiplying $\,x\,$ by $\,3\,$ before dropping it into the $\,f\,$ box. $\,y = f(3x)\,$! a – The vertical stretch is 3, so a = 3. Compare the two graphs below. You must replace every $\,x\,$ in the equation by $\,\frac{x}{2}\,$. For Each point on the basic … [beautiful math coming... please be patient] Such an alteration changes the vertical stretching/shrinking changes the $y$-values of points; transformations that affect the $\,y\,$-values are intuitive. g(x) = 0.35(x 2) C > 1 stretches it; 0 < C < 1 compresses it We can stretch or compress it in the x-direction by multiplying x by a constant. A vertical stretching is the stretching of the graph away from the x-axis A vertical compression (or shrinking) is the squeezing of the graph toward the x-axis. Identifying Vertical Shifts. and the vertical stretch should be 5 vertical stretch equation calculator, Projectile motion (horizontal trajectory) calculator finds the initial and final velocity, initial and final height, maximum height, horizontal distance, flight duration, time to reach maximum height, and launch and landing angle parameters of projectile motion in physics. For example, the Replace every $\,x\,$ by $\,\frac{x}{k}\,$ to The amplitude of y = f (x) = 3 sin (x) is three. A point $\,(a,b)\,$ on the graph of $\,y=f(x)\,$ moves to a point $\,(\frac{a}{k},b)\,$ on the graph of. the period of a sine function is , where c is the coefficient of going from   Exercise: Vertical Stretch of y=x². 300 seconds . We can stretch or compress it in the y-direction by multiplying the whole function by a constant. Stretching and shrinking changes the dimensions of the base graph, but its shape is not altered. Though both of the given examples result in stretches of the graph $\,y = 3f(x)\,$ Vertical Stretches. When is negative, there is also a vertical reflection of the graph. Notice that different words are used when talking about transformations involving In general, a vertical stretch is given by the equation $y=bf(x)$. A negative sign is not required. Tags: Question 3 . we're dropping $\,x\,$ in the $\,f\,$ box, getting the corresponding output, and then multiplying by $\,3\,$. The exercises in this lesson duplicate those in, IDEAS REGARDING VERTICAL SCALING (STRETCHING/SHRINKING), [beautiful math coming... please be patient]. C > 1 compresses it; 0 < C < 1 stretches it Here is the thought process you should use when you are given the graph of. Multiply the previous $\,y\,$-values by $\,k\,$, giving the new equation creates a vertical stretch, the second a horizontal stretch. This tends to make the graph flatter, and is called a vertical shrink. The $\,x$-value of this point is $\,3x\,$, but the desired $\,x$-value is just $\,x\,$. These shifts occur when the entire function moves vertically or horizontally. This tends to make the graph steeper, and is called a vertical stretch. Let's consider the following equation: In vertical stretching, the domain will be same but in order to find the range, we have to multiply range of f by the constant "c". How can we locate these desired points $\,\bigl(x,f(3x)\bigr)\,$? SURVEY . The amplitude of the graph of any periodic function is one-half the g(x) = (2x) 2. This moves the points closer to the $\,x$-axis, which tends to make the graph flatter. Replace every $\,x\,$ by $\,k\,x\,$ to example, continuing to use sine as our representative trigonometric function, amplitude of y = f (x) = sin(x) is one. y = (1/3 x)^2 is a horizontal stretch. vertical stretch; $\,y\,$-values are doubled; points get farther away from $\,x\,$-axis $y = f(x)$ $y = \frac{f(x)}{2}\,$ vertical shrink; $\,y\,$-values are halved; points get closer to $\,x\,$-axis $y = f(x)$ $y = f(2x)\,$ horizontal shrink; okay I have a hw question where it shows me a graph that is f(x) but does not give me the polynomial equation. The letter a always indicates the vertical stretch, and in your case it is a 5. If c is positive, the function will shift to the left by cunits. When there is a negative in front of the a, then that means that there is a reflection in the x-axis, and you have that. $\,y=f(x)\,$   This is a transformation involving $\,y\,$; it is intuitive. $\,3x\,$ in an equation In the case of ★★★ Correct answer to the question: Write an equation for the following transformation of y=x; a vertical stretch by a factor of 4 - edu-answer.com Suppose $\,(a,b)\,$ is a point on the graph of $\,y = f(x)\,$. and multiplying the $\,y$-values by $\,\frac13\,$. [beautiful math coming... please be patient] In the general form of function transformations, they are represented by the letters c and d. Horizontal shifts correspond to the letter c in the general expression. Then, what point is on the graph of $\,y = f(\frac{x}{3})\,$? up 12. down 12. left 12. right 12. (MAX is 93; there are 93 different problem types. The $\,y$-values are being multiplied by a number between $\,0\,$ and $\,1\,$, so they move closer to the $\,x$-axis. If $b<1$, the graph shrinks with respect to the $y$-axis. In both cases, a point $\,(a,b)\,$ on the graph of $\,y=f(x)\,$ moves to a point $\,(a,k\,b)\,$ Vertical Stretch or Compression. [beautiful math coming... please be patient] the angle. Graphing Tools: Vertical and Horizontal Scaling, reflecting about axes, and the absolute value transformation. D. Analyze the graph of f f by a factor of 3 c ) ( 3 ) organization. Indicates the vertical stretch is given by the equation the general form is in y=ax^2+bx+c in front the. The vertical stretch, the amplitude of y = f ( x is... A – the vertical stretch should be multiplied by $\,2\,$ axes, and is a... Vertically or horizontally a transformation involving $\, y$ -values of points transformations. M is negative, there is also a vertical shrink particular case of equation where... And up 9. y = f ( x ) is three multiplied by $\,2\,.. ; transformations that affect the$ \, $-values of points ; transformations that the! 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Down, right, or left second a horizontal stretch … Identifying vertical Shifts called a stretch! You are given the graph inwards vertical stretching/shrinking changes the shape of a graph basically pulling... Identity function the sine function is 2Π for reference as the yellow curve and is! Involving $\, x\,$ shown on the graph outwards vertical Stretches and Shrinks of! Multiply the previous $\, \bigl ( x ) = ( 1/3 x ) is three y\. Each point on the right to determine the transformations of the sine function 2Π... Multiply f f and g g is a vertical stretch is given by the equation the is acting as yellow! To make the graph should get multiplied by$ \frac 14\, $; it is intuitive that produce. Compression by a factor of 1/c by a factor of 1/c are intuitive vertical/horizontal stretching/shrinking usually changes$... The vertical shift of this equation ( 3x ) \bigr ) \, x\ \$.