Posted by **mysterychicken** on Tuesday, May 10, 2011 at 11:28am.

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

x + 2y = -10

-4y = 2x + 20

(True)

48. The graph of the following system yields parallel lines.

x - 2y = 1

y = -3x + 10

(False)

Thanks

-MC

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