Question

Gabriel borrowed some money from his friend in order to help buy a new video game system. Gabriel agreed to pay the friend back some amount every week until his loan was paid off. Let LL represent the amount Gabriel owes his friend after tt weeks. A graph of LL is shown below. Write an equation for LL then state the slope of the graph and determine its interpretation in the context of the problem.

Answer 1

LL is negative because at t=2 LL=-30. At this point the slope of the graph is -1/4, or one fourth.