Creating a Zoom Tool with A Circle

Yes, you can insert images into graphs, then go to the wrench on the far right to remove axes and gridlines, and put the expressions from my other reply into the graph. (I would copy slide 11 and just edit the graph, so you don’t have to rewrite the CL code.)

Edit: Here you can paste this link into the graph:
https://www.desmos.com/calculator/nwtgl9z6gw