Answer:
C
Step-by-step explanation:
Lookin at the graph we see P = - 4
If Q has to be 6 and a half away from P then
it can be towards the negative side at -4+(-6 and a half) = - 10 1/2 (not an option given)
and
it can be towards the positive side -4 + (6 and a half) = 2 1/2 (C)
