Dawn earns $16,500 per year. she pays 9.5% of her gross income in state and local taxes. how much is withheld from each paycheck for these taxes if she is paid biweekly

There is a linear relationship between a salesperson sales and her weekly income.if her sales are $200 her income is $500 and if her sales are 1,200 her income is $600.what is the relationship between sales and income