Amy's new summer job at the pool will pay her 9$ per hour.Which term describes this type of hourly income?

Let the total amount earned at a given time be y, if x is the number of hours worked and amount earned per hour is $9, thus the equation representing this information will be:
Total amount earned=(number of hours)*(amount earned per hour)
hence:
y=9*x
y=9x
Answer y=9x