2. Isoprofit curve Weak Axiom of Profit Maximization(WAPM) if ys yt are in Y, and choice by firm under price ps and pt. then pys>py.we can get:(p3-p2)(y-y)≥0Or△p△y≥0 lecture 2 for Chu Kechen Honors Collegelecture 2 for Chu Kechen Honors College 2.Isoprofit curve • Weak Axiom of Profit Maximization (WAPM) if y s , y t are in Y, and choice by firm under price p s and p t . then . we can get: or  s s s t p y p y ) 0  s t s t (p -p )(y - y    p y 0