CCSS.Math.Content.8.F.B.4

The value of y varies directly with x.  Which function represents the relationship between x and y if y = 14 when x = 6. 

• y=20x
• y=84x
• y=7/3x
• y=3/7x

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CCSS.Math.Content.8.F.B.4

Find the slope of the line that passes through:
(-3, -4) and (7, 6)

• 0
• Undefined
• -1
• 1

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CCSS.Math.Content.8.F.B.4

The next two terms of the sequence 4,7,10,13 are

• 16 and 19
• 15 and 19
• 16 and 18
• 15 and 18

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CCSS.Math.Content.8.F.B.4

A weightlifter is adding plates of equal weight to a bar.  The table below shows the total weight, including the bar, that he will lift depending on the total number of plates on the bar.
Number of Plates                   Total Weight (lb)
2                                               115
4                                               185
6                                               255
8                                               325
Based on this information, which statement is true?

• The bar weighs 35 lb without any plates.
• The bar weighs 70 lb without any plates.
• The bar weighs 45 lb without any plates.
• The bar weighs 25 lb without any plates.

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CCSS.Math.Content.8.F.B.4

Every Friday for 8 weeks Kylan withdrew $35 from his savings account.  How much did he withdraw in all?

• -280
• 280
• 27
• -27

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CCSS.Math.Content.8.F.B.4

What is the constant of proportionality (in miles per hour) based on the table?

• 45
• 90
• 135
• 2

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CCSS.Math.Content.8.F.B.4

What is the slope in this picture?

• Positive
• Negative
• Zero
• Undefined

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CCSS.Math.Content.8.F.B.4

Which equation has a positive y-intercept and a negative slope?

• y= 3x - 5
• y= -3x + 5
• y= -3x - 5
• y= 3x + 5

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CCSS.Math.Content.8.F.B.4

Write the equation of a line that passes through the point (-5,-4) and has a slope of 1/3.

• y=1/3x + 4
• y=1/3x -7/3
• y= 1/3x - 5
• y= 1/3x -1/3

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CCSS.Math.Content.8.F.B.4

What is the constant rate of change between the quantities in the table?

• -20 gal per minute

• -2 gal per minue

• 2 gal per minute

• 20 gal per minute

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CCSS.Math.Content.8.F.B.4