Answer:
7 points A=B 2 Points B=C 5 points to A-C
Explanation:
We count left to right and see it is positive counting as numbers go up along the axis.
We could expand
A-B = 5+ right 2+up
B-C = -2 down.
A-C = 5 right
= C-A = -5 left
= B-A = -2 down -5 left