\[\left\{ \begin{matrix} x - 2y = 6 \\ x + y = 4\ \ \ \ \\ \end{matrix} \right.\ \text{\ \ \ \ \ }\]
\[\left\{ \begin{matrix} 2y = x - 6 \\ y = 4 - x\ \ \\ \end{matrix} \right.\ \text{\ \ \ \ \ }\]
\[\left\{ \begin{matrix} y = \frac{1}{2}x - 3\ \ \ (1) \\ y = 4 - x\ \ \ \ \ \ (2) \\ \end{matrix} \right.\ \]
\[(1)\ y = 0,5x - 3\]
\[x\] | \[0\] | \[2\] |
---|---|---|
\[y\] | \[- 3\] | \[- 2\] |
\[(2)\ y = 4 - x\]
\[x\] | \[0\] | \[1\] |
---|---|---|
\[y\] | \[4\] | \[3\] |
\[(4,7;\ - 0,7).\]