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Vertical and Horizontal Stretches and Compressions

Total questions: 16

Worksheet time: 34mins

Name
Class
Date
1.

Does the equation vertically stretch, compress, or reflect?

f(x)=0.75x2f\left(x\right)=0.75x^2  
*Always compare to the parent function (graph first)*

a)

Stretch by a factor of 2

b)

Compress by a factor of 0.75

c)

Reflect across the x-axis

d)

Both stretch by a factor of 2 and reflect across the x-axis

2.

Does the equation vertically stretch, compress, or reflect?
f(x)=−5x2f\left(x\right)=-5x^2  
*Always compare to the parent function (graph first)*

a)

Stretch by a factor of 5

b)

Compress by a factor of  52\frac{5}{2}  

c)

Reflect across the x-axis

d)

Both Stretch by a factor of 5 & Reflect across the x-axis

3.
What are the transformations?
y=(x-2)3+4
a)
Horz shift right 2      Vert shift up 4
b)
Horz shift left 2    Vert shift up 4
c)
Horz shift right 2      Vert shift down 4
d)
Horz shift left 2      Vert shift up 4
4.

Find the equation of the transformed graph

a)

y= |x|

b)

y=|x| -1

c)

y= -|x|

d)

y=|x-1|

5.

Find the equation of the transformed graph

a)

y=∣x+3∣y=\left|x+3\right|

b)

y=3∣x∣y=3\left|x\right|

c)

y=∣x∣+3y=\left|x\right|+3

d)

y=∣x∣y=\left|x\right|

6.

A horizontal stretch...

a)

moves a graph left or right

b)

flips a graph upside down

c)

moves a graph up or down

d)

makes a graph wider

7.

Given the f(x)=x2 and the point (-2, 4), what happens to the point of g(-2), if g(x)=f(1/3x)= (1/3x)2?

a)

it becomes (-2, 12)

b)

it becomes (-6, 4)

c)

it becomes (-2/3, 4)

d)

it becomes (-2, 4/3)

8.

Given point on a function f(x) is (1, 1), what will the point become for h(x) if h(x)=f(1/2x)?

a)

it becomes (1, 1/2)

b)

it becomes (1/2, 1)

c)

it becomes (2, 1)

d)

it becomes (1, 2)

9.
If the blue is f(x)=x2, the red must be
a)
g(x)=(x=3)2
b)
g(x)=x2-3
c)
g(x)=x2+3
d)
g(x)=3x2
10.
If the blue is f(x)=x2, the red must be
a)
g(x)=2x2
b)
g(x)=0.5x2
c)
g(x)=x2+2
d)
g(x)=(x+2)2
11.
If the blue is f(x)=x2, the red must be
a)
g(x)=(x+3)2
b)
g(x)=(x-3)2
c)
g(x)=x2+3
d)
g(x)=x2-2
12.
Write an absolute value function given the following transformations:
Reflection across the x-axis
Vertical shift right 2 units
Horizontal shift down 7 units
a)
y = -|x + 2| - 7 
b)
y = |x - 2| - 7 
c)
y = -|x - 2| - 7
d)
y = -|x - 2| + 7
13.
Write an absolute value function given the following transformations:
Reflection across the x-axis
Vertical shift right 2 units
Horizontal shift down 7 units
a)
y = -|x + 2| - 7 
b)
y = |x - 2| - 7 
c)
y = -|x - 2| - 7
d)
y = -|x - 2| + 7
14.
Tell how the function transformed from y =|x|
y = -2|x|
a)
Translated left 2 units
b)
Reflected over x-axis
c)
Stretched vertically and reflected over x-axis
d)
Compressed vertically and reflected over the x-axis
15.
a)
y = Ix + 2I - 1
b)
y = -Ix + 2I - 1
c)
y = -Ix - 2I - 1
d)
y = -Ix + 1I - 2
16.
What is the equation of the absolute value function?
a)
f(x)= 4|x+3|
b)
f(x)= 1/4 |x+3|
c)
f(x)= 1/4 |x - 3|
d)
f(x)= 4|x - 3|