1. Chapter 2 Section 7 Two-Variable Inequalities
Algebra 2 Notes
January 21, 2009

2. Warm-Ups Solve each inequality. Graph the solution on a number line.
Solve and graph each absolute value equation or inequality.

3. Practice Test
Problem #12:
Any Questions so far??

4. Solving an Inequality
A Solution is any ordered pair that makes the equation TRUE
Example:
Possible Solutions:

5. Graphing an Inequality
Feasible Region: the area which includes all possible solutions to the inequality
Graph the following inequality:
Check your answer:
pick an ordered pair in the feasible region and see if it makes the inequality true.

6. Graphing an Inequality
Graph the following inequalities:

7. Steps to Graphing a Linear Equality
Step 1: Graph the given equation
Step 2: Use the correct line
Use a solid line
Use a dotted line
Step 3: Shade
Shade below the line
Shade above the line
Step 4: Check your answer!

8. Graphing Absolute Value Inequalities
Graph each absolute value inequality
Remember! Plot the vertex first then find two other points on either side of the vertex!

9. Homework #10
Pg 104 #1, 5, 7, 11, 15, 18, , 28, 36-42
Yes, you will need graph paper!
Don’t forget about the test on Friday!!
Review day tomorrow