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January 30, 2015

January 30, 2015

Posted by **Kiki** on Saturday, September 7, 2013 at 2:17am.

- Math -
**Graham**, Saturday, September 7, 2013 at 2:50amThe slope of a perpendicular line is the negative inverse of the slope of the original line.

If the slope of the original line is: m

Then the slope of a perpendicular line is: -1/m

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