TEKS.MATH.8.4A

The height (H in inches) of a candle is represented by the linear function: H(t)=-0.25t+6, where t represents the time passed in hours. What is the meaning of the slope?

• The height of the candle will decrease by 0.25 inches per hour
• The height of the candle will increase by 0.25 inches per hour.
• The candle is 6 inches tall before it is lit. 
• The candle is 0.25 inches tall before it is lit. 

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TEKS.MATH.8.4A

How do you find the slope in a GRAPH?

• rise over run
• divide
• use the square root
• dilate it

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TEKS.MATH.8.4A

For the equation
y + 1 = -3(x - 5),
the line contains the point (5, -1) and has a slope of?

• -1
• 1
• -3
• 5

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TEKS.MATH.8.4A

Write the equation in slope-intercept form for the line that contains the points
(3, -5) and (5, - 1)

• y = 2x + 11
• y = 2x + 1
• y = 2x - 1
• y = 2x - 11

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TEKS.MATH.8.4A

Find the slope of the line.

• Undefined
• 0
• 1
• -1

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TEKS.MATH.8.4A

Which of the following are ways to find the rate of change?

• change in y over change in x
• rise over run
• subtract y coordinates over subtract x coordinates
• all of the above

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TEKS.MATH.8.4A

Find the slope of the line.

• -5/4
• 5/4
• -4/5
• 4/5

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TEKS.MATH.8.4A

Is the function linear or nonlinear?
y = -x

• Linear
• Nonlinear

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TEKS.MATH.8.4A

Calculate the rate of change.

• 6
• 1/6
• -6
• -1/6

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TEKS.MATH.8.4A

What does the point (2,4) represent?

• They get 2 cm of rain in 4 hours
• In 2 hours it rains 4 cm
• ¹/₂ cm per hour
• 1/2 hour per 1 cm of rain

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TEKS.MATH.8.4A