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.
CK-12 Foundation
Ck 12: Algebra: Determining the Equation of a Line
This comprehensive study guide highlights the main terms and formulas needed to determine the equation of a line. Examples are included.
CK-12 Foundation
Ck 12: Geometry: Lines in the Coordinate Plane Study Guide
This study guide on lines in a coordinate plane covers key terms, what different line slopes look like, postulates about parallel and perpendicular lines, the slope-intercept equation, how to graph parallel and perpendicular lines, and...
Cool Math
Coolmath: Perpendicular Lines
This CoolMath Resource will help students determine if lines are perpendicular by finding the slope, using the point-slope formula, and graphing.
Shodor Education Foundation
Shodor Interactivate: Vertical Line Test
Learn about the vertical line test for functions by trying to connect points in the plane to build a function. When you have connected all of the points, you will be told if your graph is a valid graph of a function.
CK-12 Foundation
Ck 12: Algebra: Determining the Equation of a Line
Write the equations of lines in point-slope form and in slope-intercept form and graph linear equations.
Houghton Mifflin Harcourt
Harcourt: School Publishers: Negative Slope
This site provides an example of a negative slope, including the equation of the line shown. Also given is a definition of a negative slope.
Math.com
Math.com: Graphing Equations Unit Quiz
The unit quiz consists of eight true or false questions that examine graphing linear equations. Solutions are provided.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Equation for Undefined Slope
This site gives the equation for a vertical line which passes through 8 on the x axis. The Dr. explains why the equation is what it is by giving a more general equation for a line than y = mx + b.
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....
Texas A&M University
Wtamu Virtual Math Lab: Intermediate Algebra: The Slope of a Line
This tutorial will show you how to find a the slope of graph, write a linear equation in slope-intercept form. You'll also learn how to determine whether two lines are parallel or perpendicular to each other. For advanced math students.
Other
Interactive Algebra: Graphing Helper for (Y = Mx + B)
Enter the slope and y-intercept of any line and it will be graphed for you. This site is great for becoming familiar with the concept of graphing and for checking your own graphs. Requires Java.
Learning Wave Communications
Learning Wave: Algebra, Section 2
The basic concepts of graphing are covered on this site, including points, slopes, equations of lines, and y-intercept. A quick discussion on the Pythagorean Theorem is also concluded. Several practice and application problems are...
Sophia Learning
Sophia: Writing a Linear Equation From a Perpendicular Line and Point
This lesson presents how to write an equation of a line that passes through a given point and is perpendicular to a given line.
Better Lesson
Better Lesson: Analyzing Linear Functions
This unit is all about linear relationships and functions.
ClassFlow
Class Flow: Slope of Parallel Lines
[Free Registration/Login Required] This flipchart investigates the idea that linear equations that have the same slope will create parallel lines. We did some samples in class and then students are to predict what happens when equations...
ClassFlow
Class Flow: Slope of Parallel Lines
[Free Registration/Login Required] Given slope and y-intercept (or a point) can you create the equation for a line parallel to that line (and then graph it)?
ClassFlow
Class Flow: Straight Lines
[Free Registration/Login Required] Students explore straight lines, graphing lines and applying the formula for graphing linear equations.
Wyzant
Wyzant: Determining the Equation of a Line Passing Through Two Points
The resource consists of practice problems that examine how to determine the equation of a line passing through two points. Worksheet and answer sheets are included.
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.
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.
Varsity Tutors
Varsity Tutors: Hotmath: Slope of a Line
Twenty-two problems present a practice finding the slope of a line. The solutions are only available with a paid subscription.
Varsity Tutors
Varsity Tutors: Hotmath: Slope Intercept Form
Find a quick, concise explanation of the slope-intercept form. An example is given and clearly explained.
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...