CCSS.Math.Content.8.F.A.2

The equation y=50x+30 represents the amount of money, y, in Amy’s savings account over time, x. The equation y=30x+50 represents the amount in Sally’s savings account. How does the graph of Sally’s account differ from the graph of Amy’s account?

• The graph representing Sally’s account starts lower on the y-axis.
• The graph representing Sally’s account starts closer to the origin.
• The graph representing Sally’s account is steeper.
• The graph representing Sally’s account is flatter.

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CCSS.Math.Content.8.F.A.2

Which equation generates a graph containing
the set of ordered pairs shown below?
{(−15, 12), (−5, 8), (5, 4), (10, 2)}

• y = -3/5 x + 3
• y = -2/5 x + 6
• y = -1/5 x + 9
• y = -4/5 x

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CCSS.Math.Content.8.F.A.2

Is function represented by the table linear or nonlinear?

• linear
• nonlinear

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CCSS.Math.Content.8.F.A.2

Is the given table a direct or inverse variation? What is the constant of variation?

• Direct, 12
• Inverse, 12
• Direct, 1/12
• Inverse, 1/12

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CCSS.Math.Content.8.F.A.2

Determine the slope and y-intercept from the following equation:   y = 3/2x + 3

• slope: 5   y-intercept:  (0,3) 
• slope: 3/2   y-intercept:  (0,3) 
• slope:  4  y-intercept:  (0,3/2)
• slope: 1/5   y-intercept:  (0,5) 

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CCSS.Math.Content.8.F.A.2

Write the an equation for the graph shown.

• y = -2x + 2
• y = 2x + 2
• y = 1/2x- 2
• y = -1/2x + 2

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CCSS.Math.Content.8.F.A.2

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

• A
• B
• C
• D

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CCSS.Math.Content.8.F.A.2

What does the x represent in this situation?
Manny’s Music Rental charges a fee of $40 plus $25 per month to rent a saxophone. Sid’s Saxophones charges $25 plus $30 per month to rent the same saxophone.
y = 25x + 40
y = 30x + 25

• price of a saxophone
• rental fee
• total cost
• number of months

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CCSS.Math.Content.8.F.A.2

Which equation best represents the relationship between x and y in the table shown?

• y= 5x+5
• y=1/5x+5
• y=15x+5
• y=10x+5

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CCSS.Math.Content.8.F.A.2

In this equation, what is the y-intercept?
y= 4x - 7

• 4
• -7
• 7
• -4

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CCSS.Math.Content.8.F.A.2