Question 139902
Mark the years on the x portion of a graph and the home prices on the y.
(x,y) (0,9.4)(7,12.9) are the 2 points on the graph.
slope=m=(y[2]-y[1])/(x[2]-x[1])
=12.9-9.4 / 7-0
=3.5/7
=1/2=.5
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point slope form of the equation of a line=y-y[1]=m(x-x[1])
take (0,9.4) as the point.
y-9.4=.5(x-0)
y-9.4=.5x
y=.5x+9.4 Answer
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Ed
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{{{graph(500,500,-10,10,-2,18,.5x+9.4)}}}