Question

How do you find the average rate of change of a function from graph?

Answer 1

Graphically speaking, the average rate of change of a function `f` on the interval `[a,b]` is represented by the slope of the secant line passing through `(a,f(a))` and `(b,f(b))`. So, if you have some way of finding the slope of the secant line, then that is the average rate of change you are looking for.

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I hope that this was helpful.