Write a System of Linear Equations Represented by the Augmented $$\left[ \begin{array} { r r | r } - 7 & 9 & - 1 \\5 & - 6 & 7\end{array} \right]$$

Multiple Choice

Write a system of linear equations represented by the augmented matrix.
- $$\left[ \begin{array} { r r | r } - 7 & 9 & - 1 \\5 & - 6 & 7\end{array} \right]$$

A) $- 7 x - 9 y = 1$
$5 x + 6 y = 7$
B) $- 7 x - 9 y = 1$
$5 x + 6 y = - 7$
C) $- 7 x + 9 y = - 1$
$5 x - 6 y = - 7$
D) $- 7 x + 9 y = - 1$
$5 x - 6 y = 7$