SOLUTION: Can you please help solve this: Write an augmented matrix for the following system of equations. x-4y+4z=-9 2x-9y+8z=1 6y-9z=-1 Thank you ;-)

Question 683916: Can you please help solve this:
Write an augmented matrix for the following system of equations.
x-4y+4z=-9
2x-9y+8z=1
6y-9z=-1
Thank you ;-)
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
x-4y+4z=-9
2x-9y+8z=1
6y-9z=-1

1x-4y+4z=-9
2x-9y+8z=1
0x+6y-9z=-1

1x+(-4)y+4z=-9
2x+(-9)y+8z=1
0x+6y+(-9)z=-1

$\large \left[ \begin{array}{c c c | c} 1 & -4 & 4 & -9\\ 2 & -9 & 8 & 1\\ 0 & 6 & -9 & -1 \end{array}\right ]$

Feel free to ask me any questions you have. Thanks.
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