Find the average rate of change y= 5x -7; from x = 3 to x = 8

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asked May 27, 2019 76.8k views

1 Answer

Wilto · Answer 1 · 2019-05-31T17:58:06+0000

Let f(x) = y = 5x - 7. Then f(3) = 5(3) - 7 = 8, and f(8) = 5(8) - 7 = 33

Then the ave. r. of c. of f(x) = 5x - 7 from x = 3 to x = 8 is

33 - 8 25
----------------- = -------- = 5 (answer)
8 - 3 5

Find the average rate of change y= 5x -7; from x = 3 to x = 8

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