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 L represent the
amount Gabriel owes his friend after t weeks. A graph of L is shown
below. Write an equation for I then state the slope of the graph and
determine its interpretation in the context of the problem.
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Amount of Money Owed
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o
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Number of Weeks
Note: The line drawn is dotted because the domain of the function is limited to the integers
L =
The slope of the function is
which reveals