Home > CC3 > Chapter 8 > Lesson 8.1.2 > Problem 8-21
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. 8-21 HW eTool (Desmos) Homework Help ✎
Think back to your work with proportions. Is this a proportional relationship?
To complete the table, divide
by the number of students. Graphs of proportional relationships can pass through the point
. Does your graph look like it will pass through ?
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.
Number of | Bus Cost per |
For every student added, the trip costs less for everyone.
There is a non-linear negative association.
Use the eTool below to help complete the table and graph the problem.
Click the link at right for the full version of the eTool: CC3 8-21 HW eTool