Question

Matt sells used books on the internet. The cost of using the website is $7.50 per week and he earns 1.50 on each book he sells Matt uses the linear model y=1.5x to figure his weekly earnings what is the rate of Change of this situation

Answer 1

$1.5 per book

Explanation:

Since y=1.5x, the rate of change is 1.5/1. Rate of change: y/x. Hence, the rate of change is 1.5/1 since y=1.5 and x=1.

1.5 / 1 = 1.5

Hence, the rate of change is 1.5.

But what's 1.5 represent?

1.5 is the number of dollars earned per book sold.

Hence, the rate of change is $1.5 per book.