Решебник по алгебре 8 класс Мерзляк ФГОС Задание 329

 

\[\boxed{\text{329\ (329).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]

\[y = \frac{k}{x}\]

\[\text{A\ }(10;1,6):\ \]

\[1,6 = \frac{k}{10}\text{\ \ }\]

\[k = 1,6 \cdot 10 = 16\]

\[1)\ \text{B\ }( - 1;\ - 16):\ \ \]

\[- 16 = \frac{16}{- 1}\]

\[- 16 = - 16 \Longrightarrow проходит.\]

\[2)\ \text{C\ }( - 2;8):\ \ \]

\[8 = \frac{16}{- 2}\ \]

\[8 \neq - 8 \Longrightarrow \ не\ проходит.\]

\[\boxed{\text{329.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]

\[1)\ x = - 4:\]

\[\ y = - \frac{36}{- 4} = 9;\]

\[x = 0,9:\]

\[y = - \frac{36}{0,9} = - 40;\]

\[x = 18:\]

\[y = - \frac{36}{18} = - 2.\]

\[2)\ y = 6:\]

\[6 = - \frac{36}{x} \Longrightarrow \ \ x = - 6;\]

\[y = - 0,3:\]

\[- 0,3 = - \frac{36}{x} \Longrightarrow \ \ x =\]

\[= - \frac{36}{- 0,3} = 120;\]

\[y = 8:\]

\[8 = - \frac{36}{x} \Longrightarrow \ \ x = - 4,5.\]