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

Slope is ________.

• Positive
• Negative
• Zero
• Undefined

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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

Which rate of change represents the graph shown?

• -15 feet per minute
• 15 feet per minute
• -200 feet per minute
• 200 feet per minute

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

Which statement below accurately represents the graph?

• $100 is earned for each hour worked
• $200 earned for every 2 hours worked
  is the unit rate
• $500 is earned for every 8 hours worked
• $300 is earned after working 4 hours

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

Which equation matches the graph? (Click me to see the image)

• y = 2x
• y = 1/4 x + 2
• y = 1x + 4
• y = -2x

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

Why is this function linear?

• This is a linear function because it does not have a constant rate of change
• This is a linear function because it creates a curved line.
• This is a linear function because it have a constant rate of change.
• This is a linear function because it's y-intercept is (0,2)

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

I can join video club A for $25.00 and rent videos for $1.00 each. Or, I can join video club B for $15.00 and rent videos for $2.00 each. If I were to rent 6 videos which club would be the better deal? How much would I spend? 

• A; $25 
• A; $30
• B; $25
• B; $27

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

For babysitting, Nicole charges a flat fee of $3, plus $5 per hour. Write an equation for the cost, C, after h hours of babysitting. 

• C = 5h + 3
• C = 3h + 5
• H = 5c + 3
• H = 3c + 5

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

Daniel is paid $10 per week for selling newspaper subscriptions.  He is also paid $3.50 for each new customer (x) that signs up for the subscription.  Which equation represents the amount (y) Daniel earns  per week?

• y = 3.5x
• y= x + 10
• y = 3.5x + 10
• y = 10x + 3.5

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

Find the initital value

• 20

• 0

• 17

• 1

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