Решите графически систему уравнений: x^2+y^2=25; y-2x=0.

\[\left\{ \begin{matrix}
x^{2} + y^{2} = 25 \\
y - 2x = 0\ \ \ \ \\
\end{matrix} \right.\ \text{\ \ \ \ \ \ }\left\{ \begin{matrix}
x^{2} + y^{2} = 5^{2} \\
y = 2x\ \ \ \ \ \ \ \ \ \ \ \\
\end{matrix} \right.\ \]

\[( - 2,2;\ - 4,\ 4);\ \ (2,2;4,4).\]