Постройте график функции: y=x-3, если x>=0; y=-2x-3, если x<0.

Question

Вопрос:

Ответ:

Accepted Answer

\[y = \left\{ \begin{matrix} x - 3,\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x \geq 0 \\ - 2x - 3,\ \ x < 0 \\ \end{matrix} \right.\ \]

\[y = x - 3\]

\[x\]	\[0\]	\[1\]
\[y\]	\[- 3\]	\[- 2\]

\[y = - 2x - 3\]

\[x\]	\[0\]	\[- 1\]
\[y\]	\[- 3\]	\[- 1\]