The figure represents the average credit card debt for selected households in Sillerville. Average Credit Card Debt, Selected Households
8000
7000
Average credit card debt,
6000
85000
(16 7415)
(0.3299)
4000
3000
0
2
4
6
8
10
12
14
16
Year (x = 0 corresponds to 1990)
Let y represent the credit card debt in dollars. Let x represent the year, where x = 0
corresponds to the year 1990, x = 4 represents 1994, and so on.
a). Use the ordered pairs given in the graph, (0, 3299) and (16,7415), to find a linear
equation to estimate the average credit card debt versus the year.