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April 21, 2014

Homework Help: Algebra

Posted by mysterychicken on Friday, May 6, 2011 at 1:39pm.

Need help with these--

40. The graph of the following system yields perpendicular lines:

x + 2y = -10
-4y = 2x + 20

True or False?

42. If we multiply a 2 x 2 matrix with a 2 x 1 matrix, the product is a 2 x 1 matrix.
-False?

Thanks
-MC

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