Matching Pairs Parallel & Perpendicular LinesOnline version Match pairs of lines that are parallel or perpendicular. by Malcolm Fraser 1 12 = 12x - 3y 2 y = 11x - 7 3 3y - 15x = 9 4 0.25x + 0.5y = 4 5 y = 10x 6 y - 7x = 14 7 16y + 2x = 9 8 7y - 21x - 9 = 0 9 y = 6x + 4 10 2y -10 = 18x 3y = 27x + 11 6y - 30x + 12 = 0 4y -8 = 44x 12y = 36x + 3 2y = 4x + 8 7y = 56x + 49 10y = 90 - x 2y = 14x - 12 4y + x = 8 6y + x = 12