1. 7.4 Applications of Linear Systems
Chapter 7
Method to Solve (Free Diving)
Systems (Scuba Diving)

2. Summary of Methods Summary of Methods

3. Metallurgy Metallurgy
Amount of copper
Brass = copper + zinc
Bronze = copper + tin

4. Break-even Point
This is a very common use of Algebra

5. Finding Break-even Point

6. Air Travel

7. Miami to San Francisco

8. 7.5 Linear Inequalities
Chapter 7

9. Inequalities

10. Linear Inequality

11. Graphing
It is important to check to make sure you shaded the correct portion.
When solving for y; shade above/below the line.

12. Rewriting Inequalities
Remember the multiply and divided by a negative number rule.
Rewriting Inequalities

13. Peanuts

14. Peanuts

15. 7.6 Systems of Linear Inequalities
Chapter 7
Systems (Amusement Park)
Solution (Concession Stand)

16. System of Linear Inequalities

17. Graphing Systems of Inequalities

18. Writing Inequalities

19. Zoo-keeper

20. Stamps