Math 9 Quarter 3 Benchmark Review

Which equation has a greater rate of change that the function in the table?

• y = 3x - 5

• y = -2x + 9

• y = 2x - 7

• y = x + 1

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

Write the equation that represents the graph.

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Renting boats on a lake costs $22 per hour plus a flat fee of $10 for insurance. If x represents the number of hours you rent the boat and y represents the total cost, which of these functions models this situation and why?

• y = 10x + 22 because 22 is the constant fee and the rate of change is 10.

• y = 10 + 22 because you add the constant fee to the money you pay for 1 hour of renting the boat.

• y = 22 + 32x because the constant fee is $10 and you add the amount you pay to rent to the initial value to get the rate of change.

• y = 22x + 10 because the constant fee is $10 and the rate of change for the rental is $22 per hour.

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The table of values shows the cost of a pizza depending on the number of toppings you put on it. If t is the number of toppings and y is the total amount, which equation models this situation?

• y = 8x + 1

• y = 2x + 8

• y = 8x + 2

• y = 2x + 2

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A plumber charges a fixed amount for a repair, plus an additional amount per hour. The equation below describes y, the total amount the plumber charges, in dollars, for a repair that takes x hours.

y = 40x + 35

• The plumber charges $40 per hour

• The plumber charges 35 per hour

• The 40 represents the fixed fee and is the y-intercept.

• The 35 represents the fixed fee and is the y-intercept

Tags

CCSS.HSF.LE.B.5

Each relation shown defines y as a function of x. Which function has the greatest rate of change?

• 
• y = 1.5x + 9

• y = 1/3x - 3

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Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

Write the equation that represents the graph in slope-intercept form.

The local museum is selling tickets for the new art show at the price of 2 tickets for $4.00. Which graph shows the relationship between the number of tickets bought and the total cost?

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Tags

CCSS.8.EE.B.5

Which graph correctly displays the cost of gas at $2 per gallon?

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• 

Tags

CCSS.8.EE.B.5

Which of these functions has a greater rate of change than the function graphed below, and why?

• y = 20x + 75, because the rate of change of the graphed function is 25

• y = 20x + 75, because the rate of change of the graphed function is 50

• y = 60x + 10, because the rate of change of the graphed function is 25

• y = 60x + 10, because the rate of change of the graphed function is 50

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9