Figure 22-3 Four graphs are shown, each with Quantity on the horizontal axis and Price in dollars on the vertical axis. Graph one shows a downward sloping demand curve, D, and an upward sloping supply curve, S. The intersection of D and S has coordinates: (100,000, 10) Graph 2 shows a vertical demand curve, d, with a horizontal intercept of (10,0). There is a dashed horizontal line placed at a price of 10 and extending to d. Graph 3 shows a horizontal demand curve, d, placed with a vertical intercept of (0, 10). There is a dashed vertical line placed at a quantity of 10 and extending to d. Graph 4 shows a straight diagonal upward-sloping demand curve, d, which begins at the origin. There is a dashed vertical line placed at a quantity of 10 and extending to d, and a dashed horizontal line at a price of 10 and extending to d. Refer to Figure 22-3. A perfectly competitive firm operating in the market depicted in graph (1) faces the demand curve depicted in a. graph (1)-the same as the market demand curve. b. graph (3). c. graph (4). d. graph (2)