1. Math 71A 3.1 – Systems of Linear Equations in Two Variables 1

2. 2

3. 3 system of linear equations

4. 4 linear system

5. 5 system of linear equations linear system

6. 6 system of linear equations linear system

7. 7

8. 8 Graphing Systems of Linear Equations

9. 9

10. 10 Graphing Systems of Linear Equations

11. 11 Graphing Systems of Linear Equations

12. 12 Graphing Systems of Linear Equations

13. 13 Graphing Systems of Linear Equations

14. 14 Graphing Systems of Linear Equations

15. 15 Graphing Systems of Linear Equations

16. 16 Graphing Systems of Linear Equations

17. 17 Substitution Method

18. 18 Substitution Method

19. 19 Substitution Method

20. 20 Substitution Method

21. 21 Substitution Method

22. 22 Substitution Method

23. 23 Addition Method

24. 24 Addition Method

25. 25 No Solution or Infinitely Many Solutions Exactly one solution No solution Infinitely many solutions

26. 26 No Solution or Infinitely Many Solutions Exactly one solution No solution Infinitely many solutions

27. 27 No Solution or Infinitely Many Solutions Exactly one solution No solution Infinitely many solutions

28. 28 No Solution or Infinitely Many Solutions Exactly one solution No solution Infinitely many solutions

29. 29 No Solution or Infinitely Many Solutions Exactly one solution No solution Infinitely many solutions

30. 30 No Solution or Infinitely Many Solutions Exactly one solution No solution Infinitely many solutions intersect once parallel identical

31. 31 No Solution or Infinitely Many Solutions

32. 32 No Solution or Infinitely Many Solutions