To determine the correct equation that shows the relationship between the number of students (y) and the number of chaperones (x), we start with the information given: there is 1 chaperone for every 11 students. This means that for every 11 students, there is 1 chaperone.
This relationship can be expressed mathematically as:
\[ y = 11x \]
This means that the number of students \( y \) is equal to 11 times the number of chaperones \( x \).
So, the correct equation that shows the relationship between the number of students and the number of chaperones is:
\[ y = 11x \]