Algebra 1 unit 4 quiz review

What is the definition of function?

• It has inputs and outputs

• Inputs have different outputs every time

• Every input has only one output

• x-values and y-values

Is this a function?

• Yes

• No

Rewrite in function notation: (-5, 8)

• F(8)=-5

• F(-5)=8

The function W(x) where x=inches of rain and W(x)= # of wildflowers growing.
Interpret W(5)=75

• With 5 inches of rain, 75 wildflowers are grow

• With 75 inches of rain, 5 wildflowers grow

• With 75 inches of rain, 8 wildflowers grow

• With 5 inches of rain, 8 wildflowers grow

Translate function notation into coordinate notation. F(3)=-10

• (-10,3)

• (10,-3)

• (3,-10)

• (3,10)

Is this a function?

• Yes

• No

Tags

CCSS.8.F.A.1

Given H(x)=7-3x

Find x when H(x)=5

• X=-22

• X=-8

• X=22

• X=8

f(x) = -6x - 4, find f(-1).

• f(x)=2

• f(x)=-10

• f(x)=-2

• f(x)=10

The function h(t) represents the height in inches of a plant after t weeks. What does the notation h(4) = 5 mean?

• At 5 weeks the plant is 4 inches tall

• At 4 weeks the plant is 4 inches tall

• At 5 weeks the plant is 5 inches tall

• At 4 weeks the plant is 5 inches tall

If f(x)=5x−17 what is x f(x)=3

• x=4

• x=-2

• x=14/5

• x=32