**Algebra: Chapter 12/13 Review
**

The Benchmark #12/13 review packet is just like the test for Monday covering Chapters 12 and 13. Bring your questions and make sure that your notes are UP TO DATE! 200 points on the line!

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**Algebra 1a: Chapter 9, Lesson 6, page 421 (day #2).**

**Graphing Systems of Linear Inequalities**

We continue Chapter 9-5 techniques and solve 2 inequalities.

For the first equation, we can use any technique we learned from Chapter 7. Usually, the slope-intercept or `x` and `y` intercepts can be used to quickly define the line. Check a simple point like `(0, 0)` to see if that part of the ½ plane is true. If so, then shade that area.

Do the same for the other inequality and shade the appropriate ½ plane. The **IMPORTANT PART** is **WHERE THE 2 INEQUALITIES OVERLAP THEIR SHADING, IS THE SOLUTION TO BOTH INEQUALITIES.**

Remember, boundary lines of the form `<` or `>` are **DASHED**. The line is **NOT** part of the solution. Lines of the form `≤` or`≥` are solid because their line ARE part of the solution.

Again, the textbook is pretty good here but here are **some more examples** from purplemath.com too!

Two of tonight’s homework problems solved by MrE **are here! Just click it**.