\[1)\ B( - 2;\ 2)\ и\ C(3;\ 0):\]
\[\left\{ \begin{matrix} 2 = - 2k + b \\ 0 = 3k + b\ \ \ \ \\ \end{matrix} \right.\ \text{\ \ \ }\]
\[\left\{ \begin{matrix} b = 2k + 2 \\ b = - 3k\ \ \ \ \\ \end{matrix} \right.\ \]
\[2k + 2 = - 3k\]
\[5k = - 2\]
\[k = - 0,4.\]
\[b = - 3 \bullet ( - 0,4) = 1,2.\]
\[y = - 0,4x + 1,2.\]
\[2)\ A( - 3;\ 2):\]
\[2 = - 0,4 \bullet ( - 3) + b\]
\[2 = 1,2 + b\]
\[b = 2 - 1,2 = 0,8;\]
\[y = - 0,4x + 0,8.\]
\[Ответ:\ \ y = - 0,4x + 1,2;\ \]
\[\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ y = - 0,4x + 0,8.\]