ГДЗ по алгебре 7 класс Мерзляк Задание 852

\[\boxed{\text{852\ (852).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]

\[1)\ y( - 4) = - 2 \cdot ( - 4) + 5 =\]

\[= 8 + 5 = 13\]

\[y(3,5) = - 2 \cdot 3,5 + 5 =\]

\[= - 7 + 5 = - 2\]

\[y(0) = 0 + 5 = 5\]

\[2)\ при\ y = 9:\ \ \]

\[- 2x + 5 = 9\]

\[- 2x = 4\ \]

\[x = - 2.\]

\[при\ y = - 5:\ \]

\[\ - 2x + 5 = - 5\ \]

\[- 2x = - 10\ \]

\[\ x = 5.\]

\[y = 0:\ \]

\[\ - 2x + 5 = 0\ \]

\[- 2x = - 5\]

\[\ x = 2,5.\]