Checking Polynomial function input CL

Hi! I was wondering if their is a way to give a student feedback (i.e check mark/good job) if their equation for the polynomials are correct. Here is the desmos I am creating for my students.

In slide 6, I put code in to show one way to check. I just used suffix, but you could make a note with a more involved message. Let me know if you have questions. [Copy of] 12/15 4.9 • Activity Builder by Desmos

Thank you so much!!!