1. y 4 3 2 1 -4 -3 -2 -1 x

2. Example 1 y 4 3 2 1 -4 -3 -2 -1 x
X = 3

3. Example 2 y 4 3 2 1 -4 -3 -2 -1
y = -1 x

4. Question 1 y 4 3 2 1 -4 -3 -2 -1 x

5. Question 2 y 4 3 2 1 -4 -3 -2 -1 x

6. Question 3 y 4 3 2 1 -4 -3 -2 -1 x

7. Question 4 y 4 3 2 1 -4 -3 -2 -1 x

8. Question 5 y 4 3 2 1 -4 -3 -2 -1 x

9. Question 6 y 4 3 2 1 -4 -3 -2 -1 x

10. Question 7 y 4 3 2 1 -4 -3 -2 -1 x

11. Question 8 y 4 3 2 1 -4 -3 -2 -1 x

12. Question 9 y 4 3 2 1 -4 -3 -2 -1 x

13. Question 10 y 4 3 2 1 -4 -3 -2 -1 x

14. Answers x = -2 y = 1 x = 4 y = -2 y = 3 x = -1 y = -3 x = 0 y = 0

15. Linear inequalities

16. y 4 3 2 1 -4 -3 -2 -1
This line is x=2
The region of the graph this side of the line is x > 2
The region of the graph this side of the line is x < 2 x

17. y 4 3 2 1 -4 -3 -2 -1
This line is y=x+2
The region of the graph this side of the line is y > x+2 x
The region of the graph this side of the line is y < x+2