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

Find the slope for the trend line using points (2,2) and (4,3)

• 2
• 1/2
• -2
• -1/2

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

What is this? 

• Linear function
• Nonlinear function
• Linear, but not a function
• Nonlinear and not a function

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

Evaluate the function for the given inputs.
For f(x) = -2x + 4,
find f(x) when x = -5

• f(-5) = -6
• f(-5) = -3
• f(-5) = 14
• f(-5) = 2

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

Find the slope of the line that passes through the points (2, 4) and (6, 12)

• 1/2
• -1/2
• 2
• -2

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

If the carpenter worked for 6 days, how much did he earn?

• 1250
• 1500
• 1750
• 2000

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

Which best describes the graph represented in this table?

•  proportional
• non-proportional

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

Which piecewise function corresponds to this graph? (Take your time)

• f(x) = { x  if x < 4;   -x+1  if x ≥ 4
• f(x) = { x  if x ≤ 4;  -x+1  if x > 4
• f(x) = { -x+1  if x < 4;  x  if x ≥ 4
• f(x) = { -x+1  if x ≤ 4;  x if x > 4

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

Write the equation of a line with a slope of -3 and y intercept of 8

• x = 8
• y = -3
• y = 8x -3
• y = -3x + 8

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

Find the equation of the line shown

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

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

Data was collected on the weight of a male laboratory rat for the first 25 weeks after its birth. The linear regression equation is y= 40x+100, where x is number of weeks and y is weight in grams. What does the y-intercept mean in context of the problem?

• The predicted weight of the rat in year 0.

• The predicted weight of the rat at birth.

• The current weight of the rat.

• The average increase in the rat's weight.

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