\[\boxed{\text{260\ (260).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[y = \frac{k}{x}\]
\[\ y = kx + b\]
\[1 = \frac{k}{2}\text{\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ }\]
\[k = 2.\]
\[1 = 2 \cdot 2 + b\]
\[1 = 4 + b\]
\[b = - 3.\]
\[Ответ:при\ k = 2;\ b = - 3.\]
\[3 = \frac{k}{- 2}\]
\[k = - 6.\]
\[3 = ( - 6) \cdot ( - 2) + b\]
\[3 = 12 + b\]
\[b = - 9.\ \]
\[Ответ:при\ k = - 6;\ b = - 9.\]
\[1 = \frac{k}{- 1}\]
\[k = - 1.\]
\[1 = ( - 1)( - 1) + b\]
\[1 = 1 + b\]
\[b = 2.\ \]
\[Ответ:при\ k = - 1;\ b = 0.\]