\[\boxed{\text{346.}\text{\ }еуроки - ответы\ на\ пятёрку}\]
\[y = \left\{ \begin{matrix} - x - 2;\ \ x < - 1 \\ 2x + 1;\ \ \ x \geq - 1 \\ \end{matrix} \right.\ \text{\ \ }\]
\[y = m:\]
\[\textbf{а)}\ при\ m < - 1.\]
\[\textbf{б)}\ при\ m = - 1.\]
\[\textbf{в)}\ при\ m > - 1.\]
\[\boxed{\text{346\ (346).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[s = \left\{ \begin{matrix} 6t;\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ если\ 0 \leq t < \frac{5}{6} \\ 5;\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ если\ \frac{5}{6} \leq t \leq 1 \\ - 5t + 10;\ \ если\ 1 < t \leq 2 \\ \end{matrix} \right.\ \]
\[если\ t = 0:\]
\[s = 6t = 6 \cdot 0 = 0\ км;\]
\[если\ t = \frac{1}{2} = \frac{3}{6}:\]
\[s = 6t = 6 \cdot \frac{1}{2} = 3\ км;\]
\[если\ t = \frac{5}{6}:\]
\[s = 5 = 5\ км;\]
\[если\ t = 1:\]
\[s = 5 = 5\ км;\]
\[если\ t = 1,5:\]
\[s = - 5t + 10 = - 5 \cdot 1,5 + 10 =\]
\[= - 7,5 + 10 = 2,5\ км;\]
\[если\ t = 2:\]
\[s = - 5t + 10 = - 5 \cdot 2 + 10 =\]
\[= 0\ км.\]