4. Solve the following system of linear equations (using either substitution or elimination), and graph them to verify the solution (intersection).
\( x - y + 1 = 0 \)
\( y = 2 x - 2\)
4. Solve the following system of linear equations (using either substitution or elimination), and graph them to verify the solution (intersection).
\( x - y + 1 = 0 \)
\( y = 2 x - 2\)