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y-3 = (1/5)*(x-8) // - (1/5)*(x-8)
y-((1/5)*(x-8))-3 = 0
(-1/5)*(x-8)+y-3 = 0
y-1/5*(x-8)-3 = 0
y-1/5*(x-8)-3 = 0
y-1/5*x-3+8/5 = 0
y-1/5*x-7/5 = 0
y-1/5*x-7/5 = 0
y-1/5*x-7/5 = 0 // - y-7/5
-1/5*x = -(y-7/5) // : -1/5
x = (-(y-7/5))/(-1/5)
x = -5*(7/5-y)
x = -5*(7/5-y)
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