a. Harry started a new job where he earns the same amount every hour. Last week, he worked 9 hours and earned $108 . Write the linear equation for this situation, where y represents the money earned, in dollars, and x represents the number of hours worked

I read that and it said to me:

he earned $108 for 9 hours of work, or $12 per hour, and
the money earned (y) is equal to the number of hours times the hourly rate, or stated simply as
y = 12x