Question

4 books for 1$12.00 3 books for $9.00 What is the price per book? What is the constant of proportionality

Answer 1

Answer:

the price per book is $3 the constant of proportionality is 3

Step-by-step explanation:

12 divided by 4 is 3 and 9 divided by 3 is 3 so it means that the price for 1 book is going to be 3 and for every book you buy the original value will be 3.