One spring day, Parker 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 2 hours, the temperature rose 4° per hour. For the next 5 hours, it rose 1° per
hour. The temperature then stayed steady until 6 p. m. For the next 2 hours, the
temperature dropped 3° per hour. The temperature then dropped steadily until the
temperature was 57° at midnight. On the set of axes below, graph Parker's data.