Решебник по алгебре 8 класс Мерзляк ФГОС Задание 328

 

\[\boxed{\text{328\ (328).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]

\[1)\ A\ ( - 5;4):\ \]

\[4 = \frac{k}{- 5}\ \]

\[k = - 5 \cdot 4 = - 20.\ \]

\[2)\ B\ \left( \frac{1}{6};\ - 2 \right):\ \ \]

\[- 2 = \frac{k}{\frac{1}{6}}\]

\[k = - 2 \cdot \frac{1}{6} = - \frac{1}{3}.\]

\[3)\ \text{C\ }(1,5;\ - 8):\ \ \]

\[- 8 = \frac{k}{1,5}\text{\ \ }\]

\[k = - 8 \cdot 1,5 = - 12.\]

\[\boxed{\text{328.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]

\[1)\ x = - 3:\]

\[y = \frac{24}{- 3} = - 8;\]

\[x = 6:\]

\[y = \frac{24}{6} = \ y = 4;\]

\[x = 0,2:\]

\[y = \frac{24}{0,2} = 120.\]

\[2)\ y = 12:\ \]

\[12 = \frac{24}{x} \Longrightarrow \ \ x = 2;\]

\[y = - 6:\]

\[- 6 = \frac{24}{x} \Longrightarrow \ \ x = - 4;\]

\[y = 100:\]

\[100 = \frac{24}{x} \Longrightarrow \ \ x = \frac{24}{100} = 0,24.\]