Wyzant
Wyzant: Determining the Equation of a Line From a Graph
The resource consists of practice problems that examine how to determine the equation of a line from a graph. Worksheet and answer sheets are included.
ClassFlow
Class Flow: Understanding Slope as a Ratio
[Free Registration/Login Required] Finished investigating slope as an angle and will now do some investigation with slope as a ratio. It will then be a bridge to go back to linear equations (with the connection to rate of change). There...
National Council of Teachers of Mathematics
The Math Forum: Height to Weight Ratio
A student asks Dr. Math, "If I have a friend that weighs 155 pounds and is five feet, four inches tall, what is his height-to-weight ratio?" Find out how Dr. Math solves this problem and get a better understanding of the concept of ratio.
Washington State University
Washington State University: Graphing Linear Equations
This site explains what a linear equation is, general forms of linear equations, how to graph a line using the method of plotting points. The site also details how to find points on the line given the equation, information about the...
Purple Math
Purplemath: Proportions: Introduction
Explains the basics and terminology of proportions.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Proportions
Find a quick, concise explanation of proportions. An example is given and clearly explained.