1. Chapter 3 Linear Systems Review

2. Solve by graphing
x + 2y = -7
2x – 3y = 0

3. Solve by graphing
-x + y =2
2x + y = 5

4. Classify the system without graphing (independent, dependent, inconsistent)
3x + y = 5 15x + 5y = 2

5. Classify the system without graphing (independent, dependent, inconsistent)
y = 2x + 3
-4x + 2y = 6

6. Classify the system without graphing (independent, dependent, inconsistent)
x – y = 5
y + 3 = 2x

7. Solve.
-2x + 5y = -2
x – 3y =3

8. Solve
3x – 2y = 14
2x + 2y = 6

9. Solve
3x + 7y =15
5x + 2y = -4

10. Solve
3x – y = 0
4x + 3y = 26

11. If an equation gives an answer like…
2x – y = 3
-2x + y =-3
0 = 0
What is your answer?

12. If an equation gives an answer like…
2x – 3y = 18
-2x + 3y = -6
0 = 12
What is your answer?

13. Solve by graphing
y ≤ -2x + 4
x > 3

14. Solve by graphing
4x + y > 2
y ≤ 3x - 6

15. Solve by graphing
y ≥ -2x + 4
y ≤ | x – 4| + 4

16. Graph the point in coordinate space
( -2, -1, 3)

17. Sketch the graph of the equation
2x + 4y + 6z = 12

18. Solve
x – y + z + -1
x + y + 3z = -3
2x – y + 2z = 0

19. Solve
3a + b + c =7
a + 3a – c = 13
b = 2a – 1