Question

Consider the function f(x)=2x3−9x2−24x+9 on the interval [−6,8]. Find the average or mean slope of the function on this interval.

Answer 1

one approach
the interval x = -6 to x = 8
what is the change in y values
slope is the change in y divided by the change in x

another approach
the slope is the rate of change of the function
same as the first derivative
average the values when x = 8 and when x = -6

Answer 2

Do I plug that into the function?

Answer 3

@daggiemib