SOLUTION: Find the average rate of change of f(x)=x^2-2x. From x1=3 to x2=6

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Question 909121: Find the average rate of change of f(x)=x^2-2x. From x1=3 to x2=6
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29=x%5E2-2x

f%283%29=%283%29%5E2-2%283%29

f%283%29=3

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f%28x%29=x%5E2-2x

f%286%29=%286%29%5E2-2%286%29

f%286%29=24

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Let m be the average rate of change from x1 to x2.

m+=+%28f%28x2%29-f%28x1%29%29%2F%28x2-x1%29

m+=+%28f%286%29-f%283%29%29%2F%286-3%29

m+=+%2824-3%29%2F%286-3%29

m+=+%2821%29%2F%283%29

m+=+7

The final answer is 7