Unit 9: Relating algebra and geometry Unit mastery: 0% Distance and midpoints Standard equation of a circle Expanded equation of a circle

A function is like a machine that takes an input and gives an output. Let's explore how we can graph, analyze, and create different types of functions.

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 …

Linear equations and inequalities are the foundation of many advanced math topics, such as functions, systems, matrices, and calculus. Learn how to master them and unlock new …

Want to know the path a soccer ball will take through the air? We need quadratic equations. Some equation-solving strategies, like taking the square root or factoring, work best with friendly …

Once we know a handful of parent functions, we can transform those functions to build related functions. Geometry swoops in as we translate, reflect, and dilate the graphs, working back …

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.

You've seen inverse operations like multiplication and division. Because powers are not commutative, it takes two operations to undo them. Radicals let us work backwards to get a …

Explore complex numbers in College Algebra with Khan Academy's free lessons and practice to enhance your understanding of mathematics.

Let's explore how geometry and algebra intersect. Did you think the Pythagorean theorem was just for triangles? It shows up all over the place, like in the equation for a circle or in the …