Texas Education Agency
Texas Gateway: Tea Statistics: The Regression Equation
A tutorial on how to find the line of best fit or least-squares regression line for a set of data in a scatter plot using different methods and calculations.
Integrated Publishing
Integrated Publishing: Equation of a Straight Line
This math tutorial shows the relationship of a slope to a straight line and how to write equations in point-slope or slope-intercept form.
San Diego State University
San Diego State University: Examples of Writing Linear Equations
These examples show how to write linear equations from different types of information. There are even real-world examples dealing with air pressure, sea urchins, and measurement conversions.
Purple Math
Purplemath: Solving Literal Equations
Provides a lesson on solving literal equations, explains how they are similar to solving linear equations, and works through numerous examples showing how different types of literal equations are solved.