Answer:
4/5
Step-by-step explanation:
Pick a point and call that A; the other point is B.
Take the Y part of B (the second number in the pair) and subtract the Y part of A.
3 - -1 = 4
Then, do the same thing but with the X (the first number in the pair)
so take the X part of B and subtract the X part of A.
5 - 0 = 5
and then put the 4 over the 5to get 4/5.
