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y+2 = (-4/5)*(x-8) // - (-4/5)*(x-8)
y-((-4/5)*(x-8))+2 = 0
(4/5)*(x-8)+y+2 = 0
4/5*(x-8)+y+2 = 0
4/5*(x-8)+y+2 = 0
4/5*x+y-32/5+2 = 0
4/5*x+y-22/5 = 0
4/5*x+y-22/5 = 0
4/5*x+y-22/5 = 0 // - y-22/5
4/5*x = -(y-22/5) // : 4/5
x = (-(y-22/5))/4/5
x = 5/4*(22/5-y)
x = 5/4*(22/5-y)
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