In the figure above, the length of segment AB is |7 − 1| = 6. The length of segment CD is |0 − (−4)| = 4.REMEMBER
Length is always positive.Exercise
Find the slopes of the lines that contain the following points:(0, 3) and (4, 5)(−1, 2) and (9, 8)xx.xxi. Find the slopes of the following lines: