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