MUE Ch 3 Functions Part 2

A moving company charges $90 to rent a truck for 4 hours or $150 to rent a truck for 8 hours. What equation can be used to model the cost of renting the truck per hour?

y = ​ (a)   ​ (b)   ​ (c)  

• 15x
• 60x
• +
• -
• 30
• 4
• 15
• 60

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8.5.I

A balloon is released from a ride at a height of 12 feet. The balloon rises at a rate of 3 feet per second. What is the height of the balloon after 10 seconds?

• 42 feet

• 18 feet

• 30 feet

• 12 feet

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8.5.I

The equation y =​ (a)   ​ (b)   12 models the line because the line crosses the y-axis at ​ (c)   and y decreases by ​ (d)   when x increases by 1.

• -2x
• 12
• 2
• +
• -
• -2
• 2x
• -12
• 12x
• -12x

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8.5.I

Which point predicts the hours a student who plays 9 hours of video games would spend playing outside?

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8.5.D

Draw a trend line on the graph.

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8.5.D

Write an equation that represents the trend line for the data. y = ​ (a)   +​ (b)  

• -1.5x
• 92.3
• 1.5x
• 4x
• -4x
• 342

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8.5.D

Which triangle is a direct variation of the triangles shown?

• base = 4

  hypotenuse = 7

• base = 12

  hypotenuse = 18

• base = 18

  hypotenuse = 30

• base = 21

  hypotenuse = 32

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8.5.E

Look at this set of ordered pairs: (-2, 4), (-1, 1), (0, 0), (1, 1), (1, 2)

Which of the ordered pairs prevent this set of ordered pairs from being a function? Select TWO correct answers.

• (-2, 4)

• (-1, 1)

• (0, 0)

• (1, 1)

• (1, 2)

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8.5.G

The table represents a function. The missing value can be -4 because a function ​ (a)   have more than one input that has the same output.

• can
• cannot

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8.5.G

Which set of ordered pairs is NOT a function?

• (-2, 4), (5, 5), (8, 6), (10, -2)

• (-7, -1), (1, 9), (8, 12), (-7, 14)

• (20, 12.2), (25, 15), (34, 2.1), (40, 24)

• (100, 5.6), (120, 3.7), (140, 2.9), (160, 0.4)

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8.5.G