slope L1 = (5+1)/(1+2) = 6/3 = 2
slope L2 = (-5-3)/(5-1) = -8/4 = -2
Look at your notes or text to see how they are related.
(you can also sketch them and see)
Determine whether the lines L1 and L2 passing through the pair of points are parallel , perpendicular , or neither
L1: (-2,-1), (1, 5) and L2: (1, 3), (5,-5)
1 answer