How many solutions? Systems in standard form

Compare the slopes and intercepts. Different slopes give one solution. Same slope and same intercept give infinitely many. Same slope and different intercepts give none.

1. How many solutions does the system −6x + y = −2 and −18x + 3y = −6 have? Write one, none or infinite.
2. How many solutions does the system 3x + y = 1 and 6x + 2y = 2 have? Write one, none or infinite.
3. How many solutions does the system 6x + y = 9 and −3x + y = −1 have? Write one, none or infinite.
4. How many solutions does the system 5x + y = 8 and 15x + 3y = 24 have? Write one, none or infinite.
5. How many solutions does the system 5x + y = 7 and 5x + y = 5 have? Write one, none or infinite.
6. How many solutions does the system −2x + y = 4 and −2x + y = 8 have? Write one, none or infinite.
7. How many solutions does the system 8x + y = 9 and 8x + y = 10 have? Write one, none or infinite.
8. How many solutions does the system 7x + y = 10 and 7x + y = 11 have? Write one, none or infinite.
9. How many solutions does the system −5x + y = 5 and −10x + 2y = 10 have? Write one, none or infinite.
10. How many solutions does the system 8x + y = 14 and 6x + y = 4 have? Write one, none or infinite.
11. How many solutions does the system 6x + y = −4 and 6x + y = −1 have? Write one, none or infinite.
12. How many solutions does the system −8x + y = −6 and −8x + y = −3 have? Write one, none or infinite.
13. How many solutions does the system −x + y = 14 and −3x + 3y = 42 have? Write one, none or infinite.
14. How many solutions does the system −3x + y = 12 and −3x + y = 15 have? Write one, none or infinite.
15. How many solutions does the system 8x + y = 19 and −8x + y = −16 have? Write one, none or infinite.
16. How many solutions does the system −11x + y = −9 and −11x + y = −8 have? Write one, none or infinite.
17. How many solutions does the system −6x + y = 29 and −12x + 2y = 58 have? Write one, none or infinite.
18. How many solutions does the system −14x + y = 19 and 10x + y = 16 have? Write one, none or infinite.
19. How many solutions does the system 3x + y = 29 and 9x + 3y = 87 have? Write one, none or infinite.
20. How many solutions does the system 9x + y = 3 and 9x + y = 5 have? Write one, none or infinite.