We will go over the symbols used in interval notation: parentheses, brackets, set symbols, and union symbol

We explain what each of the symbols mean when writing interval notation

We go through examples of greater than and less than and how to write that in interval notation. We include positive and negative infinity, as well as when x is locked between numbers.

We show how to make the decisions on which symbol to use by asking the questions “where can the numbers start or end,” and whether the numbers are included in the answer or not.

We go through an example where we take interval notation and turn it into greater than or less than

We go through examples of more than two positive and negative numbers being added