Interval notation is a method to represent an interval on a number line. In other words, it is a way of writing subsets of the real number line. An interval comprises the numbers lying between …

In this post, you’ll learn what interval notation is, its benefits, how to write it for different cases, and how to represent intervals on a number line. You’ll also see examples of unions and …

Basically, an interval is a set containing all numbers between two given numbers or endpoints. The set may have one, both, or neither of the two given numbers. An interval is open if the …

Learn how to write interval notation, understand what () and [] mean, and see clear examples in 9th grade math.

Let's see how to be precise about this in each of three popular methods: With Inequalities we use: Like this: Says: "x less than or equal to 20" And means: up to and including 20. In "Interval …

Interval Notation is an essential mathematics tool! Learn how to represent subsets of real numbers using two numbers, the comma symbol, parentheses, brackets and infinity symbols.

Jul 23, 2025 · In this article, we will discuss Interval Notation in detail including the different types of interval notations and their representations along with solved examples and practice problems.

Interval notation is a notation used to denote all of the numbers between a given set of numbers (an interval). For example, "all of the integers between 12 and 16 including 12 and 16" would …

Interval notation is a mathematical notation used to represent a set of real numbers that lie between two endpoints. It is a concise and elegant way to express intervals, commonly used …

Dec 15, 2025 · Learn how to write and interpret interval notation to express number ranges in inequalities and functions.