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January 30, 2015

January 30, 2015

Posted by **mike** on Sunday, July 5, 2009 at 7:01pm.

- algebra -
**Marth**, Sunday, July 5, 2009 at 7:14pmlet a = the slope of line A

let b = the slope of line B

if line B is perpendicular to line A, then a = -1/b.

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