Answer: (3, 9)
Explanation:
X: Midpoint between 0 and 6
X: Midpoint between 1 and 5
X: Midpoint between 2 and 4
X: Midpoint is 3.
Y: Midpoint between 13 and 5.
Y: Midpoint between 12 and 6.
Y: Midpoint between 11 and 7.
Y: Midpoint between 10 and 8.
Y: Midpoint is 9.