Given that \(\begin{pmatrix} 1 & x\\ 1& 1\end{pmatrix} \begin{pmatrix} 3\\ y \end{pmatrix} = \begin{pmatrix} 23\\ 7 \end{pmatrix}\) Find the values of x and y.
\( x=4,\; y=2\)
\( x=5, y=4\)
\( x=3,\; y=6\)
\( x=2, \; y=4\)
