Transcript Ralph was on his way from home to work when he remembered that he left his briefcase at home.

Ralph was on his way from home to work when he remembered that he left his
briefcase at home. He drove home and then drove back to work. Which of the following
graphs could represent his distance from home as a function of time?
Correct Answer: E
Explanation:
It is important to keep in mind that the y-values of the graph are showing Ralph's
distance from home. When Ralph starts out in the morning his distance from home
is zero. This distance from home increases until he turns around to go back home
for his briefcase. The distance decreases as he travels back home. When he gets
back home, his distance from home is again zero for a short time while he gets the
briefcase. The distance from home then increases again.