Ответ:
\[\left\{ \begin{matrix} y = - x\ \ \ \ \ \ \ (1) \\ y = x + 4\ \ \ (2) \\ \end{matrix} \right.\ \]
\[(1)\ y = - x\]
| \[x\] | \[0\] | \[1\] |
|---|---|---|
| \[y\] | \[0\] | \[- 1\] |
\[(2)y = x + 4\]
| \[x\] | \[0\] | \[1\] |
|---|---|---|
| \[y\] | \[4\] | \[5\] |

\[Ответ:( - 2;2).\]
\[\left\{ \begin{matrix} y = - x\ \ \ \ \ \ \ (1) \\ y = x + 4\ \ \ (2) \\ \end{matrix} \right.\ \]
\[(1)\ y = - x\]
| \[x\] | \[0\] | \[1\] |
|---|---|---|
| \[y\] | \[0\] | \[- 1\] |
\[(2)y = x + 4\]
| \[x\] | \[0\] | \[1\] |
|---|---|---|
| \[y\] | \[4\] | \[5\] |

\[Ответ:( - 2;2).\]