1. Section 1-3
Equations

2. equation
Mathematical sentence with an equal sign. It contains variable(s), number(s), and/or symbol(s).
The sides of an equation are separated by an equal sign!

3. Examples
side
side
side
side

4. Open sentence
An equation that contains variables

5. domain
A given set of numbers that are to be substituted in for the variables

6. Solution set All members/solutions that make the equation true
We use braces for
set notation! Ø
If no solution exists, we use { } or

7. Steps to solve: Create a table Plug in values Simplify
If it is true, it is a solution; If it is false, then it is not a solution