The choir is planning a trip to the water park, and the parents are trying to determine how much to charge each child. The cost to use a school bus is $350. Complete the table at right, graph your results, and then answer parts (a) and (b) below.  

1. Think back to your work with proportions. Is this a proportional relationship?

   Step 1 (a):

   To complete the table, divide $350$ by the number of students.

   Hint (a):

   Graphs of proportional relationships can pass through the point $\left(0, 0\right)$. Does your graph look like it will pass through $\left(0, 0\right)$?

2. Is there an association between the number of students and the cost per student? If so, describe it. Consider the form, direction, and outliers in your description.

   • Hint (b):

   • For every student added, the trip costs less for everyone.

     Partial Answer (b):

     There is a non-linear negative association.