Learn how to graph systems of Linear Inequalities. We discuss graphing 2 linear inequalities as well as 3 inequalities and finding the solution. We discuss the difference between greater than, greater than or equal to, less than, and less than or equal to. Also we discuss the test point method as well as another method for finding what side of the line to shade. Finally, when given a shaded region find the inequalities that describe the shaded region.
0:35 How to tell whether the line is dotted or solid
1:15 Techniques for shading
2:29 Example 1 Graph y less than= 2x -1 and 3x+2y greater 12
4:35 Example 2 Graph y less than 4, x greater than=-2, 2x-6y less than 6
6:34 Example 3 Graph y less than (-1/2)|x-2|+3, y greater than =-1
7:59 Example 4 Find the inequalities that describe the shaded region
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