Interpreting Linear Functions Review

This graph shows the number of hand-crafted bookmarks Angela designs and sells compared to the total money she earns. What is the rate of change for the function?

• $2 per bookmark

• $2.50 per bookmark

• $4 per bookmark

• $5.50 per bookmark

Tags

CCSS.HSF.IF.B.4

The function f\left(x\right)=-0.25x+5 models the height of a candle x seconds after it is lit. What is the meaning of the y-intercept of the function.

• the initial height of the candle

• the final height of the candle

• the rate at which the candle is burning

• the amount of time it will take the candle to burn

Tags

CCSS.HSF.LE.B.5

Dennis compared the y-intercept of the graph of the function f\left(x\right)=3x+5 to the y-intercept of the graph of the linear function that include the points in the table. What is the difference when the y-intercept of f(x) is subtracted from the y-intercept of g(x)?

• -11.0

• -9.3

• 0.5

• 5.5

Suppose that the function f\left(x\right)=2x+12 represents the cost to rent x movies a month from an internet movie club. Makayla now has $10. How many more dollars does Makayla need to rent 7 movies next month?

• 7

• 26

• 16

• 10

Tags

CCSS.HSF.LE.B.5

A taxi company charges a flat fee of $3 plus $2 per mile driven. Write the function that represents the total cost (C) as a function of the number of miles driven (m). Then, interpret the rate of change and the initial value.

• C(m) = 2m + 3

• C(m) = 3m + 2

• C(m) = 4m + 1

• C(m) = 5m + 2

Tags

CCSS.HSF.LE.B.5

What is the meaning of the y-intercept?

• The temperature started at 0°

• The temperature started at 70°

• The temperature increased at a rate of 40° per minute

• The temperature increased at a rate of 150° per minute

Tags

CCSS.HSF.LE.B.5

Sandra has a $20 itunes gift card and spends $3 each month.  Which equation can be used to find how much money Sandra has on her giftcard after x months?

• y = 3x + 20

• y = 3 + 20x

• y = -3x + 20

• y = -20x + 3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The equation y=10x represents the amount of allowance, y, in dollars, that Jacob receives for doing x hours of chores. Which statement interprets the slope of this equation?

• Jacob does chores for $0 per hour.

• Jacob does chores for $10 per hour.

• Jacob receives $0 of allowance money before doing any chores.

• Jacob receives $10 of allowance money before doing any chores.

Tags

CCSS.HSF.LE.B.5

Find the slope between the two given points: (-2,1) and (5,7)

• 7/6

• 2

• 6/7

• -2

Tags

CCSS.8.EE.B.5

Which is the graph of y=-x+2?

• A

• B

• C

• D