The supply and demand curves for two interdependent commodities are given by: Q =-6+2P Q=-2+3P Q 10-2P+P Q=3-2P+3P where Q and Q are quantities supplied and demanded of good i (i = 1, 2), and P, is the price of good i. a. (4 marks) Write the equilibrium conditions for each market. The two commodities are COMPLEMENTS SUBSTITUTES (Circle one) b. (9 marks) Write the equilibrium conditions in matrix array format, then derive the reduced row-echelon form to solve for P; and P. Show and explain each step (i.e., indicate clearly what elementary row operation you are using for each step). Find Q, and Q.