\[\boxed{\text{829\ (829).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\]
\[2)\ y( - 2) = 4\]
\[y(0) = 1\]
\[y(2) = - 1\]
\[y(6) = - 1\]
\[3)\ y = 1 \Longrightarrow \text{\ \ }x = 0\]
\[y = - 1 \Longrightarrow \text{\ \ }x = - 2;\ \ x = 6\]
\[y = 0 \Longrightarrow \ \ x = 1;\ \ x = 9\]