Answer: D.
If you substitute the x = 9 into the first equation it will look like this:
2y = (9) - 6
Then solve for y,
2y = 3
y = 3/2
Therefore, the correct answer would be D. (9, 3/2)
This is because ordered pairs are (x,y) and x = 9 and y = 3/2
I hope this helps!!
- Kay :)