Question 349257
a) 
{{{xave=2005.5}}}
{{{yave=3024.67}}}
{{{SSXX=17.5}}}
{{{SSYY=263055.33}}}
{{{SSXY=2088}}}
{{{b=SSXY/SSXX=119.314}}}
{{{a=yave-b*xave=-236260.133}}}
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{{{highlight(y=119.314x-236260.133)}}}
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I re-ordered the data so that 0=2003 for plotting purposes.
{{{drawing(300,300,-2,10,-200,3500,circle(0,2790,0.3),
circle(1,2829,0.3),
circle(2,2926,0.3),
circle(3,3015,0.3),
circle(4,3208,0.3),
circle(5,3380,0.3),
graph(300,300,-2,10,-200,3600,119.314x+2726.381))}}}
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b)
For {{{x=2009}}}, {{{y=3441.693}}}
For {{{x=2010}}}, {{{y=3561.007}}}