\[\boxed{\text{996\ (996).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[x = - 2;\]
\[(0;0);\ \ (2;\ - 2)\ \]
\[y = \text{kx}\text{\ \ }\]
\[- 2 = 2k\text{\ \ }\]
\[k = - 1 \Longrightarrow \ \ y = - x;\]
\[(0;3);\ \ ( - 1;0)\]
\[y = kx + b\ \]
\[3 = 0 + b \Longrightarrow \ \ b = 3\]
\[0 = - k + 3\ \ \]
\[k = 3 \Longrightarrow \ \ y = 3x + 3.\]
\[(4;0),\ \ (0;\ - 2),\]
\[y = kx + b\]
\[\ - 2 = 0 + b \Longrightarrow \ \ b = - 2\]
\[0 = 4k - 2\]
\[4k = 2\ \]
\[k = 0,5 \Longrightarrow \ y = 0,5x - 2.\]