Find the average rate of change
Find the change in f divided by the change in x.
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See worked examples
Find the average rate of change of f(x) = −x² + 5x between x = 2 and x = 5.
Answer: -2
Find the average rate of change of f(x) = −x² + 6x between x = −3 and x = −2.
Answer: 11
Find the average rate of change of f(x) = −2x² + 3x between x = 2 and x = 4.
Answer: -9
Tip: Find the change in f divided by the change in x.
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