Question 437214: the table lists the average salaries of several professional athletes
in the years 1991 and 2001.
Year Average salary
1991 $262,000
2001 $1,360,000
A. A linear function that fits the data is s(x)=?
(x=number of years since 1990, and s=average salary x years from 1990.)
B. The predicted average salary for 2005 is?
The predicted average salary for 2010 is?
I know if I figure out a linear function for part A then I can figure out the rest.
Answer by ewatrrr(24785)   (Show Source):
You can put this solution on YOUR website!
Hi, See below as x is to be the time from "2010" ...
Year Average salary
2001 $1,360,000 |Using the point-slope formula, 
1991 $262,000 m = 1,098,000 /10 = 109,800
Using the standard slope-intercept form for an equation of a line y = mx + b
where m = 109,800 is the slope and b the y-intercept.
s(x) = 109,800x + b
262,000 = 109,800*1 + b
152,200 = b
s(x) = 109,800x + +152,200
s(15) = 109,800*15 + 152,200
s(20) = 109,800*20 + 152,200
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