Slope from rise and run

Slope is rise over run: the change up or down divided by the change left or right.

1. A line goes down 1 while going left 4. What is its slope?
2. A line goes up 2 while going left 7. What is its slope?
3. A line goes down 2 while going right 2. What is its slope?
4. A line goes down 8 while going right 6. What is its slope?
5. A line goes down 6 while going right 8. What is its slope?
6. A line goes up 7 while going left 3. What is its slope?
7. A line goes down 5 while going right 5. What is its slope?
8. A line goes up 10 while going right 11. What is its slope?
9. A line goes down 3 while going right 7. What is its slope?
10. A line goes up 4 while going left 5. What is its slope?
11. A line goes up 10 while going right 8. What is its slope?
12. A line goes up 10 while going right 5. What is its slope?
13. A line goes down 15 while going left 12. What is its slope?
14. A line goes down 5 while going left 2. What is its slope?
15. A line goes down 20 while going left 8. What is its slope?
16. A line goes up 7 while going right 15. What is its slope?
17. A line goes down 4 while going left 29. What is its slope?
18. A line goes up 21 while going right 27. What is its slope?
19. A line goes up 6 while going right 20. What is its slope?
20. A line goes down 16 while going right 10. What is its slope?