As evident in the image, the function consists of linear segments and one curved segment (DE). I thought maybe I can find the equation for the function but may be over-complicating the question. I answered it with the slope of the secant line but it does not correspond to the function since I don't have the equation. The equation for average rate of change is f(b) - f(a) / b-a but there's no function to use. I hope I am not overlooking something glaringly obvious here.
We have not learned derivatives or log yet ; this is precalc so the only equation in relation is the one I mentioned above.
So for speed from DE to EF, the X values are 2.5 and 5. How do I find the average rate of change if there is no function? Does it have something to do with the y-values?
I don't know but I appreciate your help.
Thank you - looking forward to your responses.