Chapter 4 Review

Points are shown plotted on the coordinate plane. The points represent a relation, where x is the input and y

is the output.

Which statement is true?

• It does represent a function because each input has exactly one output.

• It does NOT represent a function because each input has exactly one output.

• It does represent a function because each input has many outputs.

• It does NOT represent a function because there are many outputs.

Tags

CCSS.8.F.A.1

• It is a function because each x has only one y.
• It's not a function because an x has multiple y's.
• It's not a function because a y has multiple x's.
• It is a function because each y has only one x.

Tags

CCSS.8.F.A.1

Identify the function rule that best represents the following statement:

A bottle rocket is being launched from the roof of an 80 meter tall building. If the rocket travels straight up at a rate of 22 m/s, what is the total height (H) of the rocket as a function of time (x)?

• H = 108x

• H = 80 - 22x

• H = 22x+80

• H = 80x + 22

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Find the function rule.

• y = 2x

• y = 2x+3

• y = 3x+3

• y = -2x+3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A pizzeria charges $12 per pizza plus an additional $3 for delivery. Which equation represents the cost (c) of having any number of pizzas (p) delivered?

• c = 12p + 3

• c = 12p

• c = 3p

• c = 12 + 3p

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A plumber charges a service fee of $40 plus $25 per hour for labor.

(A) Write a function rule for the total cost (y) of hiring the plumber for a job that takes x hours.

(B) How much would it cost to hire the plumber for a job that takes 4 hours?

• (A) y = 25x+40

  (B) $140

• (A) y = 40x + 25

  (B) $185

• (A) y = 40 + 25x

  (B) $185

• (A) y = 40x + 25

  (B) $140

Tags

CCSS.HSF-BF.A.1A

y is 5 less than the product of 4 and x

• y = 4x - 5

• y < 4x

• y = 5 - 4x

• y + 5 = 4x

Tags

CCSS.6.EE.C.9

Write an equation to show a relationship between the input and the output

• a x 9 = b

• a ÷ 8 = b

• a ÷ 9 = b

• b ÷ 8 = b

Tags

CCSS.5.OA.B.3

Is the function linear or nonlinear?

• Linear
• Nonlinear

Tags

CCSS.8.F.A.3

Is the function linear or nonlinear?

• Linear
• Nonlinear

Tags

CCSS.8.F.A.3