seanisom7 seanisom7 21-11-2018 Mathematics contestada Which pair of equations represents two perpendicular lines? A. y=-7/8x+3 and -7y=-8x B. 8y=3x+40 and y=8/2x-1 C. 5y=15-2x and 2/5x-4=y D. y=9x+3 and y=9x-1/3