The following equations are the market demand and supply schedules before

the imposition of a per unit tax.

Good X Qs = 2P Qd = 20

Good Y Qs = 2P Qd = 10 - P

Assume there is an imposition of a $2 per unit tax on producers. Graph the supply

and demand curves before and after the tax, for each good. Show what happens to

the market price and quantity in each case. Then, on each graph, carefully shade in

the tax incidence for producers and consumers.