One spring day, William noted the time of day and the temperature, in degrees Fahrenheit. His findings are as follows: At 6 a.m., the temperature was 52° F. For the next 4 hours, the temperature rose 1° per hour. For the next 5 hours, it rose 3° per hour. The temperature then stayed steady until 6 p.m. For the next 2 hours, the temperature dropped 2° per hour. The temperature then dropped steadily until the temperature was 58° at midnight. On the set of axes below, graph William's data.