Purple Math
Purplemath: Straight Line Equations: Slope Intercept Form
Slope-intercept form of a line is shown in formulas and examples with this Purplemath lesson. There are examples of slope-intercept with the slope and a point and with two points. Includes interactive widgets for exploring concepts.
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Purplemath: Graphing Linear Equations: T Charts
A nice tutorial on how to graph linear equations. Goes through the process step by step and gives numerous examples.
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Purplemath: Slope of a Straight Line
This lesson on slope explains the slope concepts, demonstrates how to use the slope formula, shows how to find slope in horizontal and vertical lines, and how to use slope to find whether the lines through the pairs of points are...
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Purplemath: Slope: Parallel and Perpendicular Lines
Describes and gives good examples relating to the slopes of parallel and perpendicular lines.
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Purplemath: Completing the Square: Ellipses Equations
Demonstrates step-by-step how to complete the square for ellipses and hyperbolas. Includes several charts and graphs for understanding.
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Purplemath: Absolute Value Inequalities
Purplemath.com offers a discussion is presented on how to solve absolute value inequalities. This lesson contains worked problems of solving absolute value inequalities and finding absolute value expressions given the solution.
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Purplemath: Inverse Functions: Definition of "Inverse" / Drawing the Inverse
Explains the concept of inverse functions, covers some typical exercises, and demonstrates how to find the inverse of a given function.
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Purplemath: Completing the Square: Finding the Vertex
Demonstrates step-by-step how to complete the square to find the vertex of a parabola. Thorough descriptions of each problem.
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Purplemath: Solving One Step Linear Equations
Demonstrates step-by-step, with illustrations, how to solve linear equations. Also explains the formatting and reasoning for 'no solution' and 'all x' equations. Includes interactive tool for practice solving linear equations.
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Purplemath: Solving Radical Equations: Concepts
Provides a thorough lesson on radical equations. Explains what radical equations are and provides many different examples on how to solve different types of radical equations.
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Purplemath: Graphing Radical Functions: Intro
A lesson on graphing radical equations gives numerous example problems which are worked through step by step.
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Purplemath: Absolute Value
Purplemath.com offers a comprehensive lesson on absolute value that provides some examples.
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Purplemath: X and Y Intercepts
This lesson from Purplemath.com explains how to find x and y intercepts then shows exmples.
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Purplemath: Factor Theorem
Purplemath.com discusses the Factor Theorem, explaining its relationship to the Remainder Theorem. The lesson has a link to synthetic division, a key to discovering if a value is a root.
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Purplemath: Synthetic Division: The Process
This lesson compares synthetic division with long division, and demonstrates how to use synthetic division.
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Purplemath: Polynomial Division: Simplification and Reduction
Demonstrates, step-by-step and with worked examples, how to do long division of polynomials.
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Purplemath: Completing the Square: Circle Equations
This tutorial works through two examples step by step that shows how to complete the square for finding the center and radius of a circle.
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Purplemath: Fractional (Rational) Exponents
A good explanation of rational exponents and how to compute with them.
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Purplemath: Homework Guidelines for Mathematics
This Purplemath guide shows you exactly how to format your homework papers so they look neat and organized.
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Purplemath: Variable
With this Purplemath lesson, find the answer to this question with examples to show how variables are written and used.
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Purplemath: Rational Expressions: Finding the Domain
Use this Purplemath lesson to learn everything you've ever wanted to know about simplifying rational expressions. You'll find great explanations and examples on this page.
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Purplemath: Multiplying Rational Expressions
Not only will you learn how to multiply and divide rational expressions, but Purplemath shows you what common mistakes are made so you can avoid them.
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Purplemath: Complex Fractions
A brief lesson, including good examples, on complex fractions is provided by PurpleMath.
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Purplemath: Lcm & Gcf
Purplemath shows an easy and orderly way to determine the GCF and LCM of any two numbers. Even large numbers won't be a challenge with this method.