6. While driving on I-10, Geoffrey used his cruise control so that the number of miles he traveled was proportional to the time he spent driving. After five hours, Geoffrey had driven 340
miles. Determine the constant of proportionality and explain its meaning in the context of this
situation.
7. The perimeter of a square is proportional to the length of its sides. This relationship can be
expressed by the equation P = 4s. What is the constant of proportionality and what does it mean?