I've been struggling with this question for the past hour

Given f(x) = 17-x^2what is the average rate of change in f(x) over the interval [1, 5]?

Polygon mnopq is dilated by a scale factor of 0.8 with the origin as the center of dilation, resulting in the image m′n′o′p′q′. the coordinates of point m are (2, 4), and the coordinates of point n are (3, 5). the slope of is .

Which of the choices shown could be used to prove that aacp=abcp ?