For the Augmented Matrix, Give the System of Equations It $\left[ \begin{array} { l l | l } 1 & 7 & 6 \\0 & 1 & 4\end{array} \right]$

Multiple Choice

For the augmented matrix, give the system of equations it represents. $\left[ \begin{array} { l l | l } 1 & 7 & 6 \\0 & 1 & 4\end{array} \right]$

A) $\left\{ \begin{array} { r } - x - 7 y = 0 \\- y = 0\end{array} \right.$
B) $\left\{ \begin{array} { r } - x - 7 y = 6 \\- y = 4\end{array} \right.$
C) $\left\{ \begin{array} { r } x + 7 y = 0 \\y = 0\end{array} \right.$
D) $\left\{ \begin{aligned}y + 7 x & = 6 \\y & = 4\end{aligned} \right.$
E) $\left\{ \begin{array} { r } x + 7 y = 6 \\y = 4\end{array} \right.$