Which are linear and nonlinear equations

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

The ordered pair (2,-5.2) is located in quadrant iv

Thomas works for a company that occupies a large campus every workday he orders a cup of coffee on campus and the $1.50 cost is automatically deducted from his paycheck. if thomas visits the coffee shop 13 times what will the net change in his paycheck be