Question

Using complete sentences, explain how to find the average rate of change for f(x) from x = 4 to x = 7.

Answer 1

@phi

Answer 2

average rate of change is change in y divided by change in x
or, in this case, change in f(x) divided by change in x

Answer 3

So 7 divided by 4?

Answer 4

not that simple. find f(7) - f(4) that is change in f(x)
find 7-4 which is 3. that is the change in x
now divide: (f(7) - f(4))/3

btw, f(7) means replace x with 7 in your equation, and do the arithmetic to find a number.