# Ch. 3.1-3.3 Test Outline

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2.6 Special Functions

- Piecewise Functions
- Graph.
- Domain and Range.

3.1 Solving Systems Of Equations By Graphing

- Spot the intersections.
- Three types of solutions (know the vocabulary):
- Inconsistent: parallel lines, no solution
- Consistent and dependent: same line, infinite solutions
- Consistent and independent: single solution at intersection

- Identify the type of solution algebraically by putting equations into the same form.

3.2 Solving Systems Of Equations Algebraically

- Solve with substitution.
- Solve with multiplication then elimination.
- Recognize the three types of solutions when solving by elimination.

3.3 Solving Systems Of Inequalities By Graphing

- Graph inequalities to find intersecting regions.
- Recognize when there are no intersecting regions.
- Write simple systems of inequalities.
- Graph then find vertices algebraically using substitution or elimination.