In a region where there is an electric field, the electric forces do + 8.0. 1019 J

Question:

In a region where there is an electric field, the electric forces do + 8.0. 10−19 J of work on an electron as it moves from point X to point Y.
(a) Which point, X or Y, is at a higher potential?
(b) What is the potential difference, VY − VX, between point Y and point X?