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Y = (-5/4)*x-(15/8) // - (-5/4)*x-(15/8)
Y-((-5/4)*x)+15/8 = 0
Y+(5/4)*x+15/8 = 0
Y+5/4*x+15/8 = 0 // - Y+15/8
5/4*x = -(Y+15/8) // : 5/4
x = (-(Y+15/8))/5/4
x = -4/5*(Y+15/8)
x = -4/5*(Y+15/8)
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