Answer:
Values for y are y = 52 or y = -48
Explanation:
No diagram was provided but the question had enough information to be answered
Since the x coordinates of both barn and well are the same, it means the well is either vertically north of the barn or vertically south.
Therefore y can be either 2 + 50 = 52 giving (-1, 52) as one coordinate
Also y can be 2 - 50 = -48 giving (-1, -48) as another coordinate
See attached figure