How can I restrict a movable point to quadrants 1-3

Questions
1

I am having students drag a point around a graph to indicate a thought but I only want them to be able to drag the point between quadrants 1-3. I tried to get the numeric value of the x,y variable using CL then manipulate that but so far have been unsuccessful.

Thanks

2

Sounds like the main thing is the logic for this. Try something like this:
https://www.desmos.com/calculator/1spryzofnx

You can grab the a,b variables in CL if you like but… you really don’t need it. Just dragging it around as-is will give you the feedback I think you’re looking for.

3

I like this. Didn’t know the two separate points would allow you to continue dragging. And you can turn the visibility of the “Nope” point off, so the cursor will move, but only the “Yes” point will display.