Dilating Functions

Which of the following is correct about f(x)=5d(x)?

• f(x) is 1/5 the height of d(x)

• f(x) is 1/5 the width of d(x)

• f(x) is 5 times the height of d(x)

• f(x) is 5 times the width of d(x)

• r(x) is 1/3 the width of s(x)

• r(x) is 1/3 the height of s(x)

• r(x) is 3 times the width of s(x)

• r(x) is 3 times the height of s(x)

Which points stay the same in a horizontal dilation?

• x-intercepts

• vertex

• y-intercepts

Tags

CCSS.HSF-IF.C.7A

Is the following a dilation?

• Yes

• No

Tags

CCSS.8.G.A.3

Which of the following statements is true about f(x)=4g(x)

• Their domains are the same, but the range of f(x) is 4x the range of g(x).

• Their domains are the same, but the range of f(x) is 1/4 the range of g(x).

• Their ranges are the same, but the domain of f(x) is 4x the domain of g(x).

• Their ranges are the same, but the domain of f(x) is 1/4 the domain of g(x).

Which of the following would create a function wider than f(x)?

f(x) has the point (-3,12) on it. g(x)=f(3x). Which point must be on g(x).

• (-9,12)

• (-1,12)

• (-3,36)

• (-3,4)

Which points stay the same in a vertical dilation?

• x-intercepts

• vetex

• y-intercepts