Solve each problem. To visualize the situation, use graph paper and a compass to carefully graph each circle.

Suppose that receiving stations X, Y, and Z are located on a coordinate plane at the points (7, 4), (-9, -4), and (-3, 9), respectively. The epicenter of an earthquake is determined to be 5 units from X, 13 units from Y, and 10 units from Z. Where on the coordinate plane is the epicenter located?