#### Answer

$$
\begin{bmatrix}
1 & 1 & 1 & 1 \\
1 & 1 & 1 & 2 \\
\end{bmatrix}
$$

#### Work Step by Step

The above system is undetermined because it has fewer equations (2) than unknowns (3). It is inconsistent because row reduction yields a row with coefficients of $0$ somehow adding up to $1$, which is impossible.