CPM Homework Help : CC2 Problem 4-51

The choir is planning a trip to the water park. The cost to use a school bus is $\$350$ . Complete the table at right then graph your result. Is this a proportional relationship?

Number of Students on the Trip	Bus Cost per Student ($)
$10$
$15$
$20$
$35$

Hint:

For each number in the table, divide $\$350$ by the number of students to find how much the bus will cost for each student going on the trip. For it to be proportional, it must satisfy $y=kx$ for some $k$ , where $y$ is the bus cost per student and $x$ is the number of students on the trip.

Answer:

This is not a proportional relationship. Explain why not.

Number of Students on the Trip	Bus Cost per Student ($)
$10$	$\mathbf{\$35}$
$15$	$\mathbf{\$23.33}$
$20$	$\mathbf{\$17.50}$
$35$	$\mathbf{\$10}$

Complete the table in the eTool below to determine if the data is proportional.
Click the link at right for the full version of the eTool: 4-51 HW eTool