Question 437214
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Hi, See below as x is to be the time from "2010" ...
Year Average salary
2001 $1,360,000     |Using the point-slope formula, {{{m =(y[2] - y[1])/(x[2] - x[1])}}}
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