Question

work. your work must prove your answer choice.

1. $232.5 for 62 books,

$38 for 10 books
yes or no
(x) independent: _______________
(y) dependent: _______________

Explanation:

Step1: Define variables

Independent (x): Number of books
Dependent (y): Total cost

Step2: Calculate unit rate 1

$\frac{\$232.5}{62} = \$3.75$ per book

Step3: Calculate unit rate 2

$\frac{\$38}{10} = \$3.80$ per book

Step4: Compare unit rates

$\$3.75
eq \$3.80$, so the relationship is not proportional.

Answer:

(x) Independent: Number of books
(y) Dependent: Total cost
YES or NO: NO