AS2 - Drag rotationally

I’ve got an interesting problem to solve, an interactive line graph. It’s pretty simple graphically, but what I need to do is make one graph line both draggable up and down, and also, if possible, to rotate it interactively. It doesn’t need to be by dragging, but I need to control the rotation somehow. But it seems like draggability is the most straightforward, if possible.

Can this be done?