Question

You start searching for a buried object by marking the center of a field as (0, 0), with coordinates giving distances in yards. Coordinates to the north or east are positive, and coordinates to the south or west are negative. You find nothing at (-10, 6), so you try a likely looking spot 3 yards to the east and 12 yards to the south of the first spot. What are the likely coordinates of the second spot?

Answer 1

since east is +x
and south is -y

(-10,6)+(3,-12) = (-7,-6)