Parallel gradient of y=2x+3 - 2, Parallel gradient of y=-3x - 7 - -3, Parallel gradient of y=1/4x+0.5 - 1/4, Parallel gradient of x + y = 7 - -1, Parallel gradient of 3y - 6x=9 - -2, Parallel gradient of 2y + 4x = 8 - 2, Perpendicular gradient of y=2 x+ 3 - -1/2, Perpendicular gradient of y=-1/3x + 3 - 3, Perpendicular gradient of y=4x + 3 - -1/4, Perpendicular gradient of y=2/3x + 7 - -3/2, Perpendicular gradient of y=-5/4x - 4/5, Perpendicular gradient of 2y = 6x + 4 - -1/3, Perpendicular gradient of 5y - 10x = 2 - 1/2, Perpendicular gradient of 3y + 2x = -7 - -3/2,

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