An image point after a 180° rotation is Z'(3, 7). What were the coordinates of the pre-image point? 2-3, -7)
217,3)
71-7,-3)
27,-3)

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.