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

Susie got a raise.  She was making $8.75 an hour.  Now she is making $9.50.  What is the percent of change?

• 6% Increase
• 7% Increase
• 8% Increase
• 9% Increase

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

What variable represents initial value? 

• M 
• B
• X 
• y

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

4x + 3y = 9 Slope-intercept form: 

• y = − 3/4 x + 3
• y = − 4 /3 x + 9
• y = − 4 /3 x + 3
• y = − 4 /3 x + 6

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

What is the slope of the table?

• -2/5
• 5/-2
• 5/2
• 2/5

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

Jose reduced the size of a photo to a height of 4 in. What is the new width if it was originally 16 in tall and 8 in wide?

• 16 in
• 3 in
• 2 in
• 4 in

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

How would you write the equation with a slope of 2/3 and a y-intercept of -3

• y=3/2x+3
• y=2/3-3
• y=2/3x-3
• y=2/3x+3

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

Which equation best matches the trend line from the scatter plot ?

• A
• B
• C
• D

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

[CHALLENGE!]
On a map, if one centimetre represents 25 kilometres, how many kilometres does 7 centimetres represent?

• 175
• 185
• 200
• 220

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

find the slope

• 3/2
• -3/2
• (-0,-3)
• none of the above

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

The number of newly reported crime cases in a county in New York State is shown in the accompanying table, where x represents the number of years since 1994, and y represents number of new cases. Write the linear regression equation that represents this set of data, rounding all coefficients to the nearest hundredth. Using this equation, find the projected number of new cases for 2003, rounded to the nearest whole number.

• 974

• 25,101

• 940

• 952

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