The concept of absolute value is very important for algebra students to understand. The key thing to know is that absolute value measures distance a number is from zero. If you remember that distance is always a positive number you will be just fine.

Key concepts to remember:

* the absolute value is the “distance” a number is from zero on the real number line
* distance is measured in positive units- therefore the absolute value of a number is always positive
* absolute values are common in algebraic expressions- so you need to really understand them



some key topics that involve absolute value:

* absolute value equations and inequalities
* real numbers
* distance
* graphing functions