An artist is painting a mural of historical community events on a wall. To make
sure that the picture is painted accurately to her vision, she creates a grid for the
wall with each unit measuring a meter. In the mural, she paints the first event at
(-2, 2), the second event at (2, 2), and the third event at (-2, 4).
The artist is planning on placing a fourth event so that the four events make a
rectangle. What will the coordinates of the fourth event be?