im just messing around with the Graph Editor inside the Movie Clip Editor, and when trying to adjust a single key i noticed the key next to it also moves inversely
is there no way to modify JUST the selected key?
Why do you need to move them? The important thing to understand here is what exactly those graphs represent: they are the speed at which the tracker is moving in an axis. They do not represent placement in x and y coordinates. So if you affect one, the speed at which the next tracking point is moving will also be affected, as the speed is relative to the speed of the previous frame. Notice how they are inversily proportiional?
To view the motion as coordinates you can create empties out of the trackers to view in 3d space. The tracking constraint can then be converted to f curves and then the motion will be just like regular keyframes in the graph editor