Own-Price Changes X1(P1, P2, y)=X2(p1, P2,y)=y p1+p2 With p2 and y fixed, higher p, causes smaller x,* and x2 Asp1→>0,x1=x2→ Asp1→>0,x1=X2→0.Own-Price Changes x p p y x p p y y p p 1 1 2 2 1 2 1 2 * * ( , , ) = ( , , ) = . + With p2 and y fixed, higher p1 causes smaller x1 * and x2 *. p x x y p 1 1 2 2 → 0, = → . * * As p1 → , x1 = x2 → 0. * * As