Slope from two points: fractions

Slope = (y₂ − y₁) ÷ (x₂ − x₁). Write a whole number or a fraction in lowest terms.

1. Find the slope of the line through (1, 4) and (15, −17).
2. Find the slope of the line through (−3, 1) and (15, −23).
3. Find the slope of the line through (−3, 1) and (15, 13).
4. Find the slope of the line through (0, −5) and (8, −17).
5. Find the slope of the line through (7, −7) and (13, −15).
6. Find the slope of the line through (3, −2) and (6, −1).
7. Find the slope of the line through (10, 4) and (18, 6).
8. Find the slope of the line through (1, −7) and (17, −31).
9. Find the slope of the line through (−6, 9) and (24, 15).
10. Find the slope of the line through (8, −8) and (24, −12).
11. Find the slope of the line through (−5, −10) and (22, −19).
12. Find the slope of the line through (−11, 6) and (7, 0).
13. Find the slope of the line through (0, −2) and (16, −10).
14. Find the slope of the line through (−1, 7) and (3, 21).
15. Find the slope of the line through (1, −15) and (6, −14).
16. Find the slope of the line through (4, −14) and (14, −28).
17. Find the slope of the line through (−3, −20) and (1, −6).
18. Find the slope of the line through (−16, −10) and (16, −18).
19. Find the slope of the line through (−6, 17) and (14, 42).
20. Find the slope of the line through (−10, 3) and (−2, −17).