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10x-7=4x+5 +7 +7 10x=4x+12 -4x -4x 6x=12 /6 /6 x=2
4x-2y = 12 -2y = -4x+12 y = 2x-6 Therefore the y intercept is -6 and the slope is 2
6x+4 = x+12+4x-6 6x-x-4x = 12-6-4 x = 2
4x+2y = 12 2y = -4x+12 y = -2x+6 So the y intercept is 6 and the slope is -2