Posted by Maria on Thursday, January 9, 2014 at 9:05pm.
Which matrix represents the system of equations below?
10x9y+13z=12
8x7y5z=15
5x+4y6z=12
a. 10,9,13
8,7,5
5,4,6
b.10,9,13
8,7,5
4,4,6
c.10,8,5
9,7,4
13,5,6
d. 10,8,5
9,7,4
13,5,6

Algebra 2  sasha, Thursday, January 9, 2014 at 9:10pm
Ans: a.
the matrix will have the same signs of the coefficients of the equations.

Algebra 2  Reiny, Thursday, January 9, 2014 at 9:49pm
Actually none of them do
the constants were completely ignored in all the choices.
You would want what is called the "augmented" matrix
10 9 13 12
8 7 5 15
5 4 6 12
btw, the elements of a matrix are not separated by commas
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