Pull equation from graph into note

Questions
1

I set up two movable points on a scatterplot on a graph and the line between the points. I want to pull the equation of the line students create with their two points into a note.

In the graph, the two draggable points are (x2,y2) and (x3,y3). I defined slope as m=(y2-y3)/(x2-x3) and the equation as y=m(x-x2)+y2. I want to pull this y= linear equation into the note.

What do I put in the CL of the note to do that?
Do I need some kind of CL or other coding in the expression list to do that?

2

Here’s an example. You can refer to numbers in the graph from the note component. That’s why I set it up to have b = y2 - mx2 and then graphing y = mx + b, so that you could refer both to m and b as individual values. Then you can build a latex string for the equation you want to display. graph to note • Activity Builder by Desmos