Step-by-step explanation: Something is said to be the converse of another if it is the opposite or reverse of the other. The second statement (y = x) is given as the converse of the first statement (x = y). The converse is also defined as the contrapositive of the inverse, and therefore must have the same truth value as the inverse always. Thus, given that all Xs = Ys, then all Ys are Xs.
