Where y is the inverse proportion function of X, a.x (Y-1) = 1 b.y = 1 / x + 1 C.Y = 1 / X squared D D.Y = 1 / 3x Why?

Where y is the inverse proportion function of X, a.x (Y-1) = 1 b.y = 1 / x + 1 C.Y = 1 / X squared D D.Y = 1 / 3x Why?

D = y = (1 / 3) / X