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Anonymous
y + 9
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3x-y=9 y=3x-9
y = (4x+9)/(2x+3)2xy+3y = 4x+93y-9 = 4x-2xy3y-9 = x(2-2y)x = (3y-9)/(2-2y)So, inverse function is 3x minus 9 divided by 2 minus 27.
13
y - 9
-5 minus 4 is -9.