Answers

2014-09-30T00:49:55+08:00
2014-10-03T09:42:18+08:00
m=-2 and (2,4)
we need this formula:
y=mx+b
how to get the formula, finding the slope:
b=y-mx
solution;
b=y-mx substitute:
b=4-(-2)(2)
b=8
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