When is y = ax = B / CX = D equal to its inverse function If I do it right, I will add 100 Wrong, y = ax + B / CX + D

When is y = ax = B / CX = D equal to its inverse function If I do it right, I will add 100 Wrong, y = ax + B / CX + D

Y = (AX + b) / (Cx + D) so y (Cx + D) = (AX + b) cyx + dy = ax + bcyx AX = b-dyx = (b-dy) / (cy-a) so the inverse function is y = (b-dx) / CX-A) if the original function y = (ax + b) / (Cx + D) and the inverse function y = (b-dx) / CX-A) are equal functions, then the first definition field is equal, neither CX + D ≠ 0, CX-A ≠ 0, so - D / C = A / C