Website
Cool Math

Coolmath: Pre Calculus Horizontal and Vertical Lines Review

For Students 9th - 10th
This CoolMath resource provides a review of horizontal and vertical lines.
Handout
Math Medics

S.o.s. Math: On Inverse Functions With Restricted Domains

For Students 9th - 10th Standards
Offers a step-by-step explanation of a one-to-one function problem on inverse functions with restricted domains, clearly using the horizontal line test. Includes sample problems.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Graphs of Linear Equations

For Students 7th - 8th Standards
[Free Registration/Login may be required to access all resource tools.] Students learn to use a table to graph functions recognizing linear equations and the equations of horizontal lines and vertical lines. Students examine guided...
Graphic
The Franklin Institute

Frankin Institute Online: Group Graphing

For Students 3rd - 8th Standards
This site from The Franklin Institute explores how to make a simple graph using a spreadsheet to portray survey data. It also gives a set of interesting sports-related web sites so that students can get statistical inforamtion.
Handout
Washington State University

Washington State University: Graphing Linear Equations

For Students 9th - 10th Standards
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...
Activity
Texas Instruments

Texas Instruments: Defining the Parabola

For Teachers 9th - 10th
The teacher will graph a horizontal line and plot a point using TI-Navigator, and the class will provide the points that create a parabola.
Unit Plan
The Math League

The Math League: Using Data and Statistics

For Students 3rd - 5th Standards
This site contains two short examples of line graphs, charts that show change over time. This is a quick introduction to the topic of statistical graphing.