Решебник по алгебре 7 класс Мерзляк ФГОС Задание 991

 

\[\boxed{\text{991\ (991).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]

\[1)\ 0x + y = - 3\]

\[y = - 3 \Longrightarrow график\ d.\]

\[2)\ 2x - y = 1\ \]

\[y = 2x - 1\ \]

\[при\ x = 1 \Longrightarrow \ \ y = 2 - 1 = 1 \Longrightarrow \ \]

\[\Longrightarrow \ прямая\ c.\]

\[3)\ 3x + 0y = 6\ \ \]

\[3x = 6\ \]

\[x = 2 \Longrightarrow прямая\ b.\]

\[4)\ x + 2y = 0\]

\[2y = - x\ \ \]

\[при\ y = - 1 \Longrightarrow \ x = 2 \Longrightarrow \text{\ \ }\]

\[\Longrightarrow прямая\ a.\]

\[\boxed{\text{991.\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]

\[y( - 3) = ( - 3)^{3} - 1 = - 28\]

\[y( - 2) = - 8 - 1 = - 9\]

\[y( - 1) = - 1 - 1 = - 2\ \]

\[y(0) = 0 - 1 = - 1\]

\[y(1) = 1 - 1 = 0\ \]

\[y(2) = 8 - 1 = 7\]