I need to find the average rate of change for my math portfolio but I don't know how. I looked it up and got beyond confused. Can anyone tell me a simplified version of how to do it?
suppose you have two points on a graph.
The average rate of change between those two points is the slope of the line joining them.
So, for example, if f(x) = x^2, then the average rate of change of f(x) on the interval [1,3] is
∆y/∆x = [f(3)-f(1)]/(3-1) = (9-1)/(3-1) = 8/2 = 4