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y-(-6/5) = (-1/5)*(x-(15/2)) // - (-1/5)*(x-(15/2))
y-((-1/5)*(x-(15/2)))-(-6/5) = 0
(1/5)*(x-15/2)+y+6/5 = 0
1/5*(x-15/2)+y+6/5 = 0
(1/5*5*(x-15/2))/5+(5*y)/5+6/5 = 0
1/5*5*(x-15/2)+5*y+6 = 0
x+5*y-15/2+6 = 0
x+5*y-3/2 = 0
(x+5*y-3/2)/5 = 0
(x+5*y-3/2)/5 = 0 // * 5
x+5*y-3/2 = 0
x+5*y-3/2 = 0 // - 5*y-3/2
x = -(5*y-3/2)
x = 3/2-(5*y)
x = 3/2-(5*y)
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