Khan Academy
Khan Academy: Bonus: Equations for Points in Subdivision
This lesson provides examples that illustrate equations for points in subdivision.
Lawrence Hall of Science
The Math Page: Topics in Pre Calculus: The Equation of a Straight Line
Here is a site that clearly and thoroughly explains linear functions and the equation of a straight line. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to...
Wyzant
Wyzant: Basics of Equations
This tutorial from WyzAnt contains a walk-through of the basics of solving algebraic equations. Examples are given and the tutorial ends with an interactive worksheet that contains an answer key.
Sophia Learning
Sophia: Writing a Linear Equation From a Perpendicular Line and Point
This lesson presents how to write an equation of a line that passes through a given point and is perpendicular to a given line.
Sophia Learning
Sophia: Equations: Lesson 2
This lesson explains the concept of an equation. It is 2 of 4 in the series titled "Equations."
Sophia Learning
Sophia: Equations for the Circle: Lesson 3
This lesson presents the standard form and the general form for the equation of a circle, and relates the two. It is 3 of 5 in the series titled "Equations for the Circle."
Sophia Learning
Sophia: Equations of Several Variables: Lesson 2
This lesson explains how we might represent an equation in terms of more than one variable. It is 2 of 5 in the series titled "Equations of Several Variables."
Sophia Learning
Sophia: Equations That Have Infinitely Many Solutions: Lesson 5
This lesson will demonstrate how to recognize when an equation has infinitely many solutions. It is 5 of 6 in the series titled "Equations that have Infinitely Many Solutions."
Sophia Learning
Sophia: Equations That Have No Solution: Lesson 5
This lesson will demonstrate how to recognize when an equation has no solution. It is 5 of 7 in the series titled "Equations that have No Solution."
Wyzant
Wyzant: Basics of an Algebra Equation
This site provides a diagram of a basic equation, followed by a full explanation.
Sophia Learning
Sophia: Equations: Lesson 3
This lesson explains the concept of an equation. It is 3 of 4 in the series titled "Equations."
Sophia Learning
Sophia: Equations and Inequalities: Lesson 3
This lesson relates inequalities to equations. It is 3 of 6 in the series titled "Equations and Inequalities."
Sophia Learning
Sophia: Equations and Inequalities: Lesson 4
This lesson relates inequalities to equations. It is 4 of 6 in the series titled "Equations and Inequalities."
Sophia Learning
Sophia: Equations, Functions, and Variables: Lesson 2
This lesson explains how equations are related to functions and variables. It is 2 of 5 in the series titled "Equations, Functions, and Variables."
Sophia Learning
Sophia: Translating Equations Into Sentences: Lesson 7
This lesson will use real world examples that demonstrate how to translate an equation into a sentence. It is 7 of 7 in the series titled "Translating Equations into Sentences."
Sophia Learning
Sophia: Writing Equations With a Variable: Lesson 1
This lesson explains how to write out equations in which the variable would be on either side of the equal sign. It is 1 of 6 in the series titled "Writing Equations with a Variable."
Sophia Learning
Sophia: Equivalent Equations: Lesson 1
This lesson defines the phrase equivalent equations. It is 1 of 5 in the series titled "Equivalent Equations."
Sophia Learning
Sophia: Balancing Chemical Equations: Lesson 6
This lesson will explain how to balance a chemical reaction. It is 6 of 6 in the series titled "Balancing Chemical Equations."
Other
Vector Equation of a Plane
This site explains how to find the vector equation of a plane given either the normal vector and a point in the plane or three distinct points in the plane.
Other
Lake Tahoe Community College: Parmetric Equations
Parmametric equations are explained by finding the parametric equation of a line giving two points on a line.
National Council of Teachers of Mathematics
The Math Forum: Lines and Slope: Chameleon Graphing
Join Joan the chameleon in an exploration of lines and slope. You'll be drawing lines, calculating slope, using equations and more!
Sophia Learning
Sophia: Finding the Equation for an Ellipse: Lesson 2
This lesson explains the steps for how to find the equation for an ellipse given its foci and vertices. It is 2 of 4 in the series titled "Finding The Equation For An Ellipse."
Sophia Learning
Sophia: Finding the Equation for an Ellipse: Lesson 1
This brief lesson shows how to find the equation for an ellipse given its foci and vertices and presents a problem to try. Includes a short quiz. It is 1 of 4 in the series titled "Finding The Equation For An Ellipse."
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