The demand and supply functions of two related goods are given by
Qd1 = 30 - 8P1 + 4 P2
Qs1 = -60 + 6P1
Qd2 = 200 + 4 P1 - 4 P2
Qs2 = -40 + 6P2
(a) What is the relationship between good one and good two?
(b) Find the equilibrium prices and quantities.