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x in (-oo:+oo)
y+9 = (8/9)*(x-3) // - (8/9)*(x-3)
y-((8/9)*(x-3))+9 = 0
(-8/9)*(x-3)+y+9 = 0
y-8/9*(x-3)+9 = 0
y-8/9*(x-3)+9 = 0
y-8/9*x+8/3+9 = 0
y-8/9*x+35/3 = 0
y-8/9*x+35/3 = 0
y-8/9*x+35/3 = 0 // - y+35/3
-8/9*x = -(y+35/3) // : -8/9
x = (-(y+35/3))/(-8/9)
x = 9/8*(y+35/3)
x = 9/8*(y+35/3)
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