Understanding Average Rate of Change

The video tutorial explains the concept of average rate of change, focusing on how it relates to the slope of a line connecting two points on a graph. It discusses how to identify intervals where the average rate of change is a specific value, such as negative 4, by calculating the slope between endpoints. The tutorial uses examples to illustrate these concepts, emphasizing the relationship between slope, net change, and average rate of change.

What is the average rate of change of a function over an interval?

• The sum of all values of the function over the interval

• The product of the values of the function at the endpoints

• The difference between the maximum and minimum values of the function

• The slope of the line connecting the endpoints of the interval

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CCSS.8.EE.B.5

How does the slope of a function change as it moves from a steep negative to a positive slope?

• It remains constant

• It becomes less negative, reaches zero, and then becomes positive

• It becomes more negative

• It oscillates between positive and negative

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CCSS.8.F.B.4

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What does it mean when the net change over an interval is zero?

• The function has a constant positive slope

• The average rate of change is zero

• The function has a constant negative slope

• The function is undefined over the interval

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CCSS.8.F.B.4

CCSS.HSF.IF.B.6

How can you determine the average rate of change over an interval?

• By adding the values of the function at the endpoints

• By subtracting the values of the function at the endpoints

• By calculating the slope of the line connecting the interval's endpoints

• By finding the area under the curve

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CCSS.8.F.B.4

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What is the average rate of change if the slope between two points is negative 4?

• Undefined

• Positive 4

• Zero

• Negative 4

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CCSS.HSF.IF.A.2

In the given example, what are the y-values at x = -1 and x = 1?

• 7 and -1

• -1 and 7

• 0 and 7

• 7 and 0

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CCSS.8.EE.B.5

What is the slope of the line connecting the points (x = -1, y = 7) and (x = 1, y = -1)?

• -2

• 4

• -4

• 2

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CCSS.HSF-LE.A.1B

How does the y-value change as x increases by 1 in the given interval?

• It increases by 2

• It remains the same

• It decreases by 4

• It increases by 4

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CCSS.8.F.B.4

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What conclusion can be drawn from the calculation of the slope in the example?

• The average rate of change is undefined

• The average rate of change is negative 4

• The average rate of change is zero

• The average rate of change is positive

Why was it unnecessary to check other intervals in the example?

• The other intervals were not given

• The function is constant over all intervals

• All intervals have the same rate of change

• The first interval already satisfied the condition