Move equation of plot on graph in Pages

This one has been irking me for quite a while. I've made a few plots in a Pages graph (as well as their R^2 values). It is especially useful to move the equations around, especially when there are multiple plots on the same graph. I have tried everything that comes to my mind, such as clicking multiple times or dragging in strange ways, but it seems as though I can not move the equations on the graph at all. They remain on the top left corner. When I try clicking on them and dragging, the graph is moved instead of the equations. Is it possible to move these equations around? The only other way I'm seeing it copying and pasting these equations into textboxes, but that likely would be a huge headache in terms of layouts as well as updating the graphs' data (and thus their trend line equations). [Here](https://streamable.com/u9lev) is a video of the issue I am describing.