Asked by Samantha

which matrix represents the system of equations below -12x-13y+13z=15
Answered by Steve
I think you left something out, no?
Answered by Samantha
OH yes woops. Here is the rest of the system.

-12x-13y+13z=15
7x-10y-3z=11
7x+14y+5z==-5
Answered by Steve
Matrices do not do well here, so take a look here. The matrix of coefficients is shown. The augmented matrix contains the extra column of (15,11,-5) as shown in the solution

http://www.wolframalpha.com/input/?i=%7B%7B-12,-13,13%7D,%7B7,-10,-3%7D,%7B7,14,5%7D%7D*%7B%7Bx%7D,%7By%7D,%7Bz%7D%7D+%3D+%7B%7B15%7D,%7B11%7D,%7B-5%7D%7D

The answers are messy; I'd double-check for typos
Answered by Samantha
Alright thank you! That was one of the answers. Do you think you could help me with a few more questions?
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