Answer:
1) No.
2) Yes "3x + y = 2".
3) Yes "5x - y = -4".
4) Yes "2x - y = -5".
5) Yes "6x - y = 7".
6) No.
7) Yes "y = 4".
8) Yes "2x + 6y = 2".
9) Yes "y = 2".
Step-by-step explanation:
This looks right to me, let me know if you have any trouble!
