The point (2,-5.5) has a positive x-coordinate, x=2, and a negative y-coordinate, y=-5.5.
This point will be found in the fourth quadrant (QIV) of the coordinate system which is located at the lower right.
In the fourth quadrant, there are two points, point S has an x-coordinate between 5 and 6, and y- coordinate equal -2
Point W has an x-coordinate at x=2 and y-coordinate between 5 and 6.
So the point on the graph that best represents (2,-5.5) is point W