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y+3 = -((9/2)*(x-1)) // + (9/2)*(x-1)
(9/2)*(x-1)+y+3 = 0
9/2*(x-1)+y+3 = 0
9/2*(x-1)+y+3 = 0
9/2*x+y-9/2+3 = 0
9/2*x+y-3/2 = 0
9/2*x+y-3/2 = 0
9/2*x+y-3/2 = 0 // - y-3/2
9/2*x = -(y-3/2) // : 9/2
x = (-(y-3/2))/9/2
x = 2/9*(3/2-y)
x = 2/9*(3/2-y)
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