\[\boxed{\text{401\ (401).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[\textbf{а)}\ (x - 3)(y - 3) = 0\]
\[\textbf{б)}\ (x + 2)(y + 2) = 0\]
\[\textbf{в)}\ (y + 2)(y - 2) = 0\]
\[\textbf{г)}\ (x - 4)(x + 2) = 0\ \]
\(\boxed{\text{401.}\text{\ }\text{ОК\ ГДЗ\ -\ домашка\ на\ 5}}\)
Пояснение.
Решение.
\[\textbf{а)}\ \ \left\{ \begin{matrix} (x - 4)^{2} + (y - 5)^{2} = 9 \\ y = x\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \\ \end{matrix} \right.\ \]
\[(x - 4)^{2} + (y - 5)^{2} = 9\]
\[окружность\ с\ центром\ (4;5)\ и\ \]
\[радиусом\ равным\ 3.\]
\[Ответ:(2,4;2,4);\ \ \ (6,6;6,6).\]
\[\textbf{б)}\ \left\{ \begin{matrix} y = x^{2}\text{\ \ \ \ \ } \\ y = 6 - x \\ \end{matrix} \right.\ \]
\(\ \)
\[Ответ:( - 3;9);\ \ (2;4).\]