Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Horizontal Lines
Find a quick, concise explanation of equations of horizontal lines. An example is given and clearly explained for equations of both horizontal and vertical lines.
Texas Instruments
Texas Instruments: Ordered Pair (Month, Day)
Students will contribute points in the form of a significant date. (month, day). They will look for vertical and horizontal patterns. Study the list for similiarities and then discover the equation for vertical and horizontal lines.
Cool Math
Coolmath: Horizontal and Vertical Lines
A short tutorial explaining the linear equations of horizontal and vertical lines.
CK-12 Foundation
Ck 12: Algebra: Horizontal and Vertical Line Graphs
[Free Registration/Login may be required to access all resource tools.] In this lesson students learn how to graph horizontal and vertical linear equations. Students watch videos, review guided notes and attempt practice problems.
Math Open Reference
Math Open Reference: Points and Lines
A complete reference guide to points, lines, and planes. It provides definitions and interactive activities that enhance further explanation.
Shmoop University
Shmoop: Basic Algebra: Graphing Horizontal and Vertical Lines
The tutorial discusses horizontal and vertical lines. Learners explore the concepts through notes and examples.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Line Problems
This site answers many general questions about linear equations and their graphs. A student posed several questions to Dr. Math regarding lines and their equations. Question number 4 is about the equation of a horizontal line and Dr....
BBC
Bbc: Skillswilse: The Number Line
This Skillswise site focuses on number lines. Included is a video about how to use number lines, fact sheets and worksheets for instruction, and quizzes on the information presented. Be aware that this is from Great Britain, so any games...
CK-12 Foundation
Ck 12: Analysis: Vertical and Horizontal Transformations
[Free Registration/Login may be required to access all resource tools.] Introduction to function transformations, including vertical and horizontal shifts.
Discovery Education
Discovery Education: Web Math: Using a Number Line
This WebMath site provides an interactive number line "solver." Content includes helpful hint and a full explanation of the mathematical solution.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Slope of a Line
Find a quick, concise explanation of how to find the slope of a line. Examples are given and clearly explained.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Horizontal and Vertical Asymptotes
Dr. Math answers 'why would a line cross a horizontal asymptote?'.
Other
Desmos: Put the Point on the Line
In this activity, students investigate slope and how it can be explained as a ratio of change between the vertical and horizontal coordinates.
Curated OER
Science Kids: Science Images: Vertical and Horizontal Line Length Illusion
This is a vertical and horizontal line length optical illusion. The vertical line that is part of the image on the left looks longer than the horizontal line but when it is checked with a ruler on the right image it is proved that they...
CK-12 Foundation
Ck 12: Algebra: Horizontal and Vertical Line Graphs
[Free Registration/Login may be required to access all resource tools.] Learn how to graph horizontal and vertical linear equations.
CK-12 Foundation
Ck 12: Algebra: Horizontal and Vertical Line Graphs
[Free Registration/Login may be required to access all resource tools.] Write and graph lines of the form y = a constant value and x = a constant value.
Khan Academy
Khan Academy: Horizontal & Vertical Lines
Practice your knowledge of horizontal and vertical lines: their graphical presentation, their slopes, and their equations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive...
Texas Instruments
Texas Instruments: Cabri Jr. The Equation of a L Ine
This activity uses Cabri Jr. to graph a line and show the equation of the line. The equations for oblique, horizontal and vertical lines are explored with emphasis on slope and y-intercept.
Other
Linear Functions, Slope and Regressions
Find activities here for linear functions, slopes and regression lines. Use them for classroom work or individual assignments.
Sophia Learning
Sophia: Find Slope and Rate of Change
This learning tutorial demonstrates how to find the slope of a line and the rate of change for a table. The lesson includes several PowerPoint presentations about slope and even provides practice problems for students to test their...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Equation of a Line Parallel to an Axis
Dr. Math gives a short discussion on how to find the equation of a line parallel to an axis (, parallel or horizontal.)
Other
Harold Olejarz: Interactive Horizon Line
An interesting interactive slide show about perspective, including the horizon line and vanishing points.
Northeast Parallel Architectures Center, Syracuse University
Npac Reu Program: General Linear Equation
This site by the Northeast Parallel Architecture Center, Syracuse University, shows the different forms of linear equations for a line.