What's the difference between a postulate and a theorem

Triangle inequality theorem state if each set of three numbers can be the lengths of the sides of a triangle. 1. 9, 8, 22. 2. 5,10,12. 3. 7,10,22. 4. 4,11,12. 5. 11,9,10. 6. 10,4,19. 7. 3,12,10. 8. 4,3,2. 9. 6,5,13. 10. 7,12,20. me .

Simplify 24÷(-2)(3)+7 a. -29 b. 3 c. 11

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)