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April 18, 2015

April 18, 2015

Posted by **Need Help** on Tuesday, September 22, 2009 at 3:20pm.

(-15.2,5.6) and (-13.2, 4.5)

slope m= ?

- Algebra1 -
**DrBob222**, Tuesday, September 22, 2009 at 4:58pmThe long way of doing this is as follows:

y = mx + b

5.6 = -15.2m + b

4.5 = -13.2m + b

===================

Two equations, two unknowns. Subtract equation 2 from #1 and solve for m.

I get -0.55 but check my work.

The short way is

(y1-y2)/(x2-x2) = ??

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