First of all, I am NEW at this! And I’m trying to learn how to make self-graded tests.

I have this question where I would like students to place a point on the graph at the solution to the system. I am now stuck. I have a draggable point and I have a correct function, but no matter where the point is dragged to, it gives the check mark. How do I fix this? Or is there a better way I could be doing this?

Thanks.