Question

Cameron earns $7 per hour at her after school job. The total amount of her paychecks varies directly with the amount of time she works. Write a direct variation equation for the amount of money that she earns for working x hours. Then graph.

Answer 1

The slope is a rate, in our case the rate is $7 per hour. Let y be the amount of money and t the time. Since time and money are directly related, this imply they describe a straight line, so we can write their relationship as

$y=7t$

Now, we must make the graph: