\[y = kx + b\]
\[A(3;\ - 2):\]
\[- 2 = 3k + b\]
\[b = - 3k - 2.\]
\[B( - 1;0):\]
\[0 = - k + b\]
\[b = k.\]
\[- 3k - 2 = k\]
\[- 4k = 2\]
\[k = - 0,5.\]
\[b = k = - 0,5.\]
\[Уравнение\ прямой:\]
\[y = - 0,5x - 0,5.\]