Question: how to find the slope of the line joining the points whose coordinates are given?
Answer: Let M (-2, 3) = (x1, y1) and N (2, 7) = (x2, y2) We know that the slope of a straight line passing through two points (x1, y1) and (x2, y2) is. m = y2−y1x2−x1. Therefore, slope of MN = y2−y1x2−x1 = 7−32+2 = 44 = 1.