The Matrix $\left( \begin{array} { l } 3 x + y - z = 6 \\2 y + 3 z = 4 \\4 z = 10\end{array} \right)$

True/False

The matrix $\left( \begin{array} { l } 3 x + y - z = 6 \\2 y + 3 z = 4 \\4 z = 10\end{array} \right)$ is in echelon form.