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x in (-oo:+oo)
y+10 = (-3/10)*(x-2) // - (-3/10)*(x-2)
y-((-3/10)*(x-2))+10 = 0
(3/10)*(x-2)+y+10 = 0
3/10*(x-2)+y+10 = 0
3/10*(x-2)+y+10 = 0
3/10*x+y-3/5+10 = 0
3/10*x+y+47/5 = 0
3/10*x+y+47/5 = 0
3/10*x+y+47/5 = 0 // - y+47/5
3/10*x = -(y+47/5) // : 3/10
x = (-(y+47/5))/3/10
x = -10/3*(y+47/5)
x = -10/3*(y+47/5)
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