Ответ:
\[3x + y = 3\ \ \ и\ \ x - y = 1\]
\[y = 3 - 3x\]
| \[x\] | \[0\] | \[1\] |
|---|---|---|
| \[y\] | \[3\] | \[0\] |
\[y = x - 1\]
| \[x\] | \[0\] | \[1\] |
|---|---|---|
| \[y\] | \[- 1\] | \[0\] |

\[\text{A\ }(1;0).\]
\[3x + y = 3\ \ \ и\ \ x - y = 1\]
\[y = 3 - 3x\]
| \[x\] | \[0\] | \[1\] |
|---|---|---|
| \[y\] | \[3\] | \[0\] |
\[y = x - 1\]
| \[x\] | \[0\] | \[1\] |
|---|---|---|
| \[y\] | \[- 1\] | \[0\] |

\[\text{A\ }(1;0).\]