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

Find the slope

• -5/7
• 7/5
• -7/5
• 5/7

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

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

• y=5000(0.7)^x
• y=30(5000)^x
• y=5000(1.3)^x
• y=5000x^x

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

Write an equation for this situation.

• y=9.75x
• y=19x
• y=19.25x
• y=9.5x

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

What type of slope?

• negative
• positive
• zero slope
• downward slope

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

Some students want to order shirts with their school logo. One company charges $9.65 per shirt plus a setup fee of $43. Another company charges $8.40 per shirt plus a $58 fee. Which equation represents the number of shirts when both companies charge the same amount? 

• y = 9.65 + x
  y = 8.40 + x
• y = 9.65x + 43
  y = 8.40x + 58
• y =9.65x
  y = 8.40x
• y = 9.65x - 43
  y = 8.40x - 58

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

Is function represented by the table linear or nonlinear?

• linear
• nonlinear

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

What is the y-intercept of the line graphed below?

• 3
• 4
• -3
• 4/3

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

Bob has $150 in his savings account and saves $40 per month.

• y=150 + 40

• y=40x + 150

• y=150x + 40

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

Write the equation of the line in slope-intercept form with slope m = 4 through the point (-2, 5).

• y = 4x - 13

• y = 4x + 13

• y = 4x - 3

• y = 4x + 3

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

Find the 35th term in the arithmetic sequence: -10, -14, -18, -22, ...

(Hint: Write the explicit rule first, then use it to solve)

• -216

• -148

• -146

• -150

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