Part A The first thing we must do in this case is to hide the slopes of each line. line m: m = (- 4-3) / (0 - (- 4)) m = -7 / 4 Line n: n = (- 2-2) / (3-1) n = -4 / 2 n = -2 Answer: Lines m and n are not parallel because their slopes are different.
Part B: We look for the slope of the K line: k = (1 - (- 3)) / (4 - (- 3)) k = 4/7 We observe that it is true that: k = -1 / m Answer: The lines are perpendicular.
