Algebra | ClassBrain Math

Introduction to Equations-Defining Variables

Variables are used throughout Algebra, Geometry, and Calculus. Variables are therefore very important to understand. A variable is a symbol, such as x, that is used to describe an unknown number. In functions...

Graphing Linear Equations- Table of Values

We often use a table of values to plot and connect points when we are graphing a line. Sometimes graphing lines using an equation involves the same methods as using a table of values. There are several...

Solving Linear Equations

Equations are fundamental to Algebra, and solving linear equations is necessary for you to learn how to solve two-step equations, and other multi-step equations. Solving linear equations involves finding...

Natural and Common Logarithms

If logarithms seem like Greek to you, this interactive algebra 2 lesson will help you sort things out. We can use many bases for a logarithm, but the bases most typically used are the bases of the common...

Ratios and Proportions

Learning to work with ratios and proportions is one of the most useful things you can learn to do. Mastering ratios and proportions will help you figure out everything from the amount of paint you need to...

Simplifying Expressions & Combining Like Terms

It is important to combine like terms so that you are dealing with the simplest form of the expression or equation. This makes the expression or equation simpler to work with and shorter to read. This...

Standard Form of a Line

The standard form of a line puts the x and y terms on the left hand side of the equation, makes the coefficient of the x-term positive, and puts everything else on the right side. The standard form is not...

Solving Quadratic Equations Using Square Roots

Solving quadratic equations using square roots works best under special circumstances. If your equation does not have a “b” term this technique may be a good one for you to try. Keep in mind...

Introduction to Systems of Equations

Systems of equations are concepts that first show up in Algebra I. Systems of equations are problems with two or more equations that contain the same variables. There are four methods to solving systems of...

Properties of Real Numbers

This video covers the five basic properties of real numbers. These properties of real numbers, including the Associative, Commutative, Multiplicative and Additive Identity, Multiplicative and Additive...