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y-1 = (-8/3)*(x-4) // - (-8/3)*(x-4)
y-((-8/3)*(x-4))-1 = 0
(8/3)*(x-4)+y-1 = 0
8/3*(x-4)+y-1 = 0
8/3*(x-4)+y-1 = 0
8/3*x+y-32/3-1 = 0
8/3*x+y-35/3 = 0
8/3*x+y-35/3 = 0
8/3*x+y-35/3 = 0 // - y-35/3
8/3*x = -(y-35/3) // : 8/3
x = (-(y-35/3))/8/3
x = 3/8*(35/3-y)
x = 3/8*(35/3-y)
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