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x in (-oo:+oo)
y-5 = (-3/4)*(x-2) // - (-3/4)*(x-2)
y-((-3/4)*(x-2))-5 = 0
(3/4)*(x-2)+y-5 = 0
3/4*(x-2)+y-5 = 0
3/4*(x-2)+y-5 = 0
3/4*x+y-5-3/2 = 0
3/4*x+y-13/2 = 0
3/4*x+y-13/2 = 0
3/4*x+y-13/2 = 0 // - y-13/2
3/4*x = -(y-13/2) // : 3/4
x = (-(y-13/2))/3/4
x = 4/3*(13/2-y)
x = 4/3*(13/2-y)
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