Write the system of linear equations represented by the augmented matrix. Use x, y, z, and, if necessary, w for the variables.
A.
| 6x + 9y + 6z | = | -2 |
| 2x + 7z | = | 4 |
| 6x + 8y | = | 2 |
B.
| 6x + 9y + 6z | = | -2 |
| 2x + 7z | = | 4 |
| 6x + 8z | = | 2 |
C.
| 6x + 9y + 6z | = | -2 |
| 2x + y + 7z | = | 4 |
| 6x + 8y + z | = | 2 |
D.
| 6x - 9y + 6z | = | -2 |
| 2x + 7z | = | -4 |
| 6x + 8y | = | -2 |
Answer: A
Mathematics
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