8.5B Thursday 3/26

Which table contains points that lie on a line parallel to y=3x?

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The graph shows the amount Morgan charges for babysitting. If Morgan doubles her hourly rate, which equation represents the amount she charges?

• C = 4x + 20

• C = 2x + 10

• C = 8x + 20

• C = 8x + 10

A line has the points (3,7) (4,9), (5,11), (6,13). If the slope of the line is divided by 2, what is the new slope?

• 1

• 2

• 3

• 4

The table shows the distance a remote controlled toy travels per second. Which equation shows the distance in terms of time?

• d=3t + 7

• d=4.75t

• d=5t + 2

• d= 7t - 9

It costs Marcy $0.50 to produce each bracelet she makes. When selling them she charges $20 plus three times the production cost per bracelet. Which equation shows the amount Marcy charges C per bracelet b?

• C = 0.5b +23

• C = 1.5b + 20

• C = 3b + 20

• C = 20b + 0.5

Determine whether the function graphed models a proportional relationship. Explain.

• Yes, the line is straight

• Yes, the line passes through the origin

• No, the line is not straight

• No, the line is straight, but does not pass through the origin

It costs $50 to rent a steam cleaner plus $2 per hour. Which graph shows the cost as a function of time?

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