\[\left\{ \begin{matrix} x^{2} + y^{2} \leq 25 \\ y - x \geq 2\ \ \ \ \ \ \ \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ \ \ }\left\{ \begin{matrix} x^{2} + y^{2} \leq 25 \\ y \geq 2 + x\ \ \ \ \ \ \\ \end{matrix} \right.\ \ \]