# Unit 6 Final Exam Review

### Algebra 1A

## A system of equations is a set of two or more equations together. There are several ways that we can solve them!

## Method 1: Graphing

**After graphing both equations on the same coordinate plane, you will then**

be able to tell what type of solution it has based on what it looks like!

*To review what those possible solutions are, click HERE!

*To see an example, click HERE!

*To get some practice, click HERE!

## METHOD 2: GRAPHING CALCULATOR

**We can use our calculators to find the intersection point of systems!**

*To view some examples, click HERE!

*To get some practice, click HERE! ## METHOD 3: SUBSTITUTION

**To "substitute" means to "replace" so we can replace a variable **

in one equation with a given value from another equation.

*To view an example, click HERE!

*To get some practice, click HERE!

## METHOD 4: ELIMINATION

**To "eliminate" means to "get rid of" so we can add or subtract **

the equations to "get rid of" one of the variables.

*To view an example, click HERE!

*To get some practice, click HERE!

## A System of Inequalities is a set of two or more inequalities. To solve them, graph the inequalities on the same coordinate plane.

**Remember that our solution is where the shaded regions overlap!**

*To see some examples, click HERE!

*To get some practice, click HERE (and just do problems #1-4)!