Data on average credit-card debt per U.S. household are given in the table below. Model the data with a linear function, and estimate the average debt in 2007 and in 2014. Answers may vary depending on the data points used.
Year, x Credit-Card Debt
Per Household, y
1992, 0 .............................................. $ 3,803
1996, 0 ........................................ 6,912
2000, 8 ........................................ 8,308
2004, 12 ........................................ 9,577
2008, 16 ........................................ 10,691
2011, 19 ........................................ 14,750