\[\boxed{\text{931.\ }\text{еуроки}\text{-}\text{ответы}\text{\ }\text{на}\text{\ }\text{пятёрку}}\]
\[y = \frac{3x - 1}{x - 2}\ \ \ при\ y = - 1:\]
\[\frac{3x - 1}{x - 2} = - 1\]
\[3x - 1 = - x + 2\]
\[3x + x = 2 + 1\]
\[4x = 3\]
\[x = \frac{3}{4}\]
\[Ответ:при\ x = \ \frac{3}{4}.\]