step 1
Find the slope
we take the points
(4,3) and (7,6)
so
m=(6-3)/(7-4)
m=3/3
m=1
step 2
Find the equation in slope intercept form
y=mx+b
we have
point (4,3)
substitute
solve for b
3=4+b
b=3-4
b=-1
therefore
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