\[\left\{ \begin{matrix} y = 2x - 1 \\ x + y = - 4 \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ \ }\left\{ \begin{matrix} y = 2x - 1 \\ y = - 4 - x \\ \end{matrix} \right.\ \]
\[y = 2x - 1\]
\[x\] | \[0\] | \[1\] | \[2\] |
---|---|---|---|
\[y\] | \[- 1\] | \[1\] | \[3\] |
\[y = - 4 - x\]
\[x\] | \[- 1\] | \[- 2\] | \[- 3\] |
---|---|---|---|
\[y\] | \[- 3\] | \[- 2\] | \[- 1\] |