AHH HELP ME AGAIN :P THERES ONE MORE AFTER THIS

How can you tell when x and y are not directly proportional?

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

You are looking for your first credit card. you plan to use this credit card only for emergencies and to pay the credit card balance in full each month. which credit card feature is most important? a. no annual fee b. low apr c. generous rewards program d. no balance transfer fee select the best answer from the choices provided