Posted by **True** on Sunday, July 22, 2012 at 6:33pm.

For what value of k does the system below not have a unique solution?

-1x + 7y + 2z = 6

2x + 1y + kz = -11

3x - 6y - 2z = -25

A.5

B.0

C.-2

D.-8

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