National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: Geo Gebra Prim (Conexiones Misteriosas)
Challenge yourself with this puzzle. Try to connect the dots of the same color with horizontal and vertical segments without leaving the grid and without crossing the lines.
University of North Carolina
University of North Carolina Wilmington: Lines in a Plane
This site from the University of North Caroline at Wilmington provides great information on the lines in a plane. The information that is given is in-depth and complete, touching on the slope of a line, equations of lines, and linear...
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.
Cool Math
Coolmath: Pre Calculus Horizontal and Vertical Lines Review
This CoolMath resource provides a review of horizontal and vertical lines.
Quia
Ixl Learning: Linear Equations
Brush up on your math skills relating to linear equations then try some practice problems to test your understanding.
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.
Math Open Reference
Math Open Reference: Vertical
Learn about vertical lines with this handy reference guide. Provides a detailed definition and examples that enhance further explanation. Includes links to related topics.
Other
Math N Stuff: Vertical Lines
This site gives information regarding vertical lines. The site contains a graph and poses a question relating to the equation of the line on the graph. The correct answer may be clicked on with a short reason.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: When Is a Slope 0 or Undefined?
At this site Dr. Math gives a discussion on the slopes of lines. The Dr. gives an analogy between the slope of a line and walking up and down hills. The Dr. explores the concept of undefined and zero slopes through his response to a...