f(x) = (2x+3)/(x-4). Work out f^-1 (x)

f^-1(x) = inverseSet f^-1(x) as y = (2x+3)/(x-4)y(x-4) = 2x+3yx-4y = 2x+3yx-2x = 3+4yx(y-2) = 3+4yx = (3+4y)/(y-2)f^-1(x) = (3+4x)/(x-2)