Please help due today I will give brainliest!

Find the slope of the line that passes through each pair of points

2. (0,1), (1,-2)
3. (2,5), (3,6)
4. (6,1), (-6,1)
5. (4,6), (4,8)
6. (5,2), (5,-2)
7. (2,5), (-3,-5)
8. (9,8), (7, -8)
9. (-5,-8), (-8,1)
10. (-3,10), (-3,7)
11. (17,18), (18,17)
12. (-6,-4), (4,1)
13. (10,0), (-2,4)
14. (2,-1), (-8,-2)
15. (5,-9), (3,-2)
16. (12,6), (3,-5)
17. (-4,5), (-8,-5)
18. (-5,6), (7,-8)