In this lesson, we will learn:

- Evaluate the Absolute Value of a Number
- Evaluate the Absolute Value of an Expression
- Comparing Numbers Using Inequality Symbols

- Absolute value:
- The distance of a number from zero
- Is always non-negative (either zero or positive)
- Absolute value of a number $x$ is expressed as $|x|$ or $abs(x)$

- Absolute value makes a negative number positive. Positive numbers and 0 remain unchanged.