The Algebra 1 course, often taught in the 9th grade, covers Linear equations, inequalities, functions, and graphs; Systems of equations and inequalities; Extension of the concept of a function; …

Learn algebra—variables, equations, functions, graphs, and more.

Learn algebra 1—linear equations, functions, polynomials, factoring, and more.

Unit 6 Complex numbers Unit 7 Exponents and radicals Unit 8 Rational expressions and equations Unit 9 Relating algebra and geometry Unit 10 Polynomial arithmetic Unit 11 Advanced function types Unit …

Created by experts, Khan Academy’s library of trusted, standards-aligned practice and lessons covers math K-12 through early college, grammar, science, history, AP®, SAT®, and more. It’s all free for …

The core idea in algebra is using letters to represent relationships between numbers without specifying what those numbers are! Let's explore the basics of communicating in algebraic expressions.

Learn to combine like terms in algebra with Khan Academy's interactive lessons and practice exercises for mastering foundational math skills.

Topics covered from very basic algebra all the way through algebra II. This is the best algebra playlist to start at if you've never seen algebra before.

Why did humans invent algebra in the first place? Let's look at the history and beauty of algebra, and review some fundamental ideas and tools we'll use throughout the course.

Learn the basics of algebra—focused on common mathematical relationships, such as linear relationships.