Posted by Anonymous on Tuesday, April 6, 2010 at 3:40pm.
slope is change in y divided by change in x
0-5=-5=y
-2-0=-2=x
5/2 is slope
so we have y=5/2x + b
plug in the point 0,5
now we have 5=5/2(0) + b
b=5.
the same for the next problem.
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