Assume that demand for a commodity is represented by the equation P = 10 – 0.2 Q d, and supply by the equation P = 2 + 0.2 Qs where Qd and Q s are quantity demanded and quantity supplied, respectively, and P is the Price. Use the equilibrium condition Qs = Qd ,
Found equilibrium price @ 10.
1. Now determine equilibrium quantity.
Graph the two equations to substantiate your answers and label these two graphs as D1 and S1.