1. 3.3: Systems of Inequalities A goal without a plan is just a wish.1

2. Graphing Inequalities
Ex1)
Ex2)

3. Graphs of Inequalities
Write a system of linear inequalities from the following graphs.
Ex3)
Ex4)

4. Application
Ex5) You need to make a fence for your rectangular garden. The length of the garden can be no more than 40 ft, and you have 140 feet of fencing that you can use.
a) Write a system of inequalities to represent the situation.
b) Graph the inequalities.
c) What does the double-shaded region represent?

5. Application
Ex6) Suppose you have two jobs, babysitting that pays $5 per hour and sacking groceries that pays $6 per hour. You can work no more than 20 hours each week, but you need to earn at least $90 per week.
a) Write a system of inequalities to represent the situation.
b) Graph the inequalities.
c) How many hours can you work at each job?

6. Graphing Absolute Value Systems
Ex7)
Ex8)

7. 7.6: Systems of Linear Inequalities
HW # 5-15 odd, 16,
17-29 odd
A goal without a plan is just a wish. 7