On a coordinate grid, Pedro's house, P, is located at (-6, -6). He is walking to his friend Quinton's house, Q, located at (13,8). Pedro stops at a convenience store which is halfway to his friend's house. What are the coordinates of the convenience store? Use the highlighter, if needed.
O M(3, 1)
O M(4.1)
O M(3.5.1)
O M(2,0)