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 two specific …

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 interval does not …

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 intersections of …

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.

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 Notation" we …

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 shorthand way to show: Subsets of the real number line. The following image shows representations for inequalities, their respective interval notation, and how they appear on a …

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

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 include the …