from the contour map of f shown below decide wether fx, fy are positive, negative or zero at p

From the contour map of f shown below decide whether fr, fy are positive, negative, ( 1. fr > 0, fy > 0 or zero at P. ( 2. fx > 0, fy 0, fy = 0 -2 -6 0 4. fx 0 6. fx