Answer
$\begin{cases}x^2+y^2\leq9\\y\lt x^2 \end{cases}$
Work Step by Step
Step 1. The region inside the circle can be represented by $x^2+y^2\leq9$
Step 2. The region below the parabola can be represented by $y\lt x^2$
Step 3. The shaded area is then
$\begin{cases}x^2+y^2\leq9\\y\lt x^2 \end{cases}$
