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x in (-oo:+oo)
y-4 = (2/9)*(x-3) // - (2/9)*(x-3)
y-((2/9)*(x-3))-4 = 0
(-2/9)*(x-3)+y-4 = 0
y-2/9*(x-3)-4 = 0
y-2/9*(x-3)-4 = 0
y-2/9*x-4+2/3 = 0
y-2/9*x-10/3 = 0
y-2/9*x-10/3 = 0
y-2/9*x-10/3 = 0 // - y-10/3
-2/9*x = -(y-10/3) // : -2/9
x = (-(y-10/3))/(-2/9)
x = -9/2*(10/3-y)
x = -9/2*(10/3-y)
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