SOLUTION: How would you solve this problem: The approximate number of tax returns examined by the IRS in 1996 was 1.9 million In 2006, it was 1.2 million examined. Let x= 0 correspond to 19

Question 420396: How would you solve this problem:
The approximate number of tax returns examined by the IRS in 1996 was 1.9 million In 2006, it was 1.2 million examined. Let x= 0 correspond to 1996, estimate the number of examined returns in 2008. Answer to 2 decimal places.
Thanks, it will be greatly appreciated.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
You are given 2 data points that you can plot on a straight line
You can plot = tax returns examined on the vertical axis,
and = year on the horizontal axis.
given:
Let x= 0 correspond to 1996
Then x = 10 corresponds to 2006
(0,1.9) and (10,1.2) are the points
-----------------------
Use the point-slope formula:

-----------------
I'll check the formula for (10,1.2)

OK
-------
Use the formula for 2008, which is

1.06 million returns examined in 2008
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Here's a plot:

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