Решите с помощью графиков систему уравнений: x+y=0; x+2y=2.

Question

Вопрос:

Ответ:

Accepted Answer

\[\left\{ \begin{matrix} x + y = 0\ \ \ \\ x + 2y = 2 \\ \end{matrix} \right.\ \text{\ \ \ \ \ }\]

\[\left\{ \begin{matrix} y = - x\ \ \ \ \ \ \\ 2y = 2 - x \\ \end{matrix} \right.\ \text{\ \ \ \ \ }\]

\[\left\{ \begin{matrix} y = - x\ \ \ \ \ \ \ \ \ \ \ \ \ \ (1)\ \\ y = 1 - 0,5x\ \ \ \ (2) \\ \end{matrix} \right.\ \]

\[(1)\]

\[x\]	\[0\]	\[1\]
\[y\]	\[0\]	\[- 1\]

\[(2)\ \]

\[x\]	\[0\]	\[2\]
\[y\]	\[1\]	\[0\]

\[\ Ответ:( - 2;2).\]