F.3,,what is the coordinates of Q?

I think that it must be (8,10).
It can be deduced.

2008-07-22 14:32:33 補充：
If Point O move to Point P,
you can know that Point O has moved to right 6 units and upwards 2 units.
Since OR//QP,
The coordinates of Q is (2+6,8+2) = (8,10).
If you still cannot understand,just ask.