This figure shows a line graph, Adjusting Capacity and Functional Demand. The x-axis shows Functional Demand, increasing. The y-axis shows time, starting before 9:00 and ending after 2:30. The graph describes trends, showing that demand varies over time. On the left, before 9:00, there is very little demand. As you move right, towards 9:30, demand peaks, and then falls off towards 12:00. After 1:00, the demand peaks again, and then falls off after 2:30.