please help. Thanks.

Consider a duopoly in which two firms face an inverse market demand function given by p(Y) = 500 - 2Y. Firm 1 has a cost function given by c1 (y1 ) = 6y; and firm 2 has a cost function given by c2 (y2 ) = 2y2 . Fill in the following blanks in the reaction curves for both firms. (Note that the cost function for firm 1 is nonlinear.) y1