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x in (-oo:+oo)
y+6 = (-3/4)*(x+2) // - (-3/4)*(x+2)
y-((-3/4)*(x+2))+6 = 0
(3/4)*(x+2)+y+6 = 0
3/4*(x+2)+y+6 = 0
3/4*(x+2)+y+6 = 0
3/4*x+y+3/2+6 = 0
3/4*x+y+15/2 = 0
3/4*x+y+15/2 = 0
3/4*x+y+15/2 = 0 // - y+15/2
3/4*x = -(y+15/2) // : 3/4
x = (-(y+15/2))/3/4
x = -4/3*(y+15/2)
x = -4/3*(y+15/2)
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