Long Run Market Supply Curve with Perfect Competition

Note: in the following clip figures 11-5 and 11-6 are inverted: figure 11-5 shows the "long-run market supply curve" while figure 11-6 shows the "long-run firm supply curve". Moreover, in both figures axes are inverted. The exact figure has prices (p) on the vertical axis and q (in fig. 11-6) and Q (in fig. 11-5) on the horizontal axis.