Figure 3-3 A graph depicting the market for Good Y shows Quantity on the horizontal axis and Price in dollars on the vertical axis. Two downward-sloping demand curves, D sub 1 and D sub 2, are plotted on the graph. D sub 2 lies to the right of D sub 1. There are three points noted on the graph: point V lies on D sub 2 at a price of $5; point W lies on D sub 1 at a price of $2; and point Z lies on D sub 1 at a price of $5. Good Y Refer to Figure 3-3. A shift in demand from D1 to D2 can NOT occur from a change in the Group of answer choices average income of good Y buyers. population. price of good Y. price of a substitute for good Y