\mathbf{y}=\left[\begin{array}{r} -1 \\ 4 \\ 3 \end{array}\right], \mathbf{u}_{1}=\left[\begin{array}{l} 1 \\ 1 \\ 0 \end{array}\right], \mathbf{u}_{2}=\left[\begin{array}{r} -1 \\ 1 \\ 0 \end{array}\right]