CK-12 Foundation
Ck 12: Algebra: Vertical Line Test
[Free Registration/Login may be required to access all resource tools.] Learn how to determine whether or not a relation is a function.
University of Vienna (Austria)
University of Vienna: Graph or Not Graph
Interactive quiz to determine whether each graph is representative of a function or not. Some graphs are discontinuous, some fail the vertical line test, and some actually are functions. After completion, the site gives a score to judge...
CK-12 Foundation
Ck 12: Algebra: Vertical Line Test
[Free Registration/Login may be required to access all resource tools.] Learn how to determine whether or not a relation is a function.
![Houghton Mifflin: Math Graphs: Vertical Line Test 17 [Pdf] Unknown Type](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Houghton Mifflin: Math Graphs: Vertical Line Test 17 [Pdf] Unknown Type")
Math Graphs
Houghton Mifflin: Math Graphs: Vertical Line Test 17 [Pdf]
Learners determine whether y is a function of x. The graph is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Vertical Line Test 16 [Pdf]
Learners determine whether y is a function of x. The graph is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Vertical Line Test 31 [Pdf]
The test is used to determine if the relation is a function. The resource consists of an enlarged printable version of a graph available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Vertical Line Test 32 [Pdf]
The test is used to determine if the relation is a function. The resource consists of an enlarged printable version of a graph available in PDF format.
CK-12 Foundation
Ck 12: Algebra: Graphs of Linear Equations
[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...
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.
Texas A&M University
Wtamu Virtual Math Lab: College Algebra: Graphing Lines
Complete this tutorial to learn how to graph a straight line if given the y-intercept and slope and how to graph horizontal and vertical lines. View examples of lines with different slopes, and practice working with slope-intercept form.
CK-12 Foundation
Ck 12: Algebra: Vertical Line Test
[Free Registration/Login may be required to access all resource tools.] This concept introduces students to relations and what makes a relation a function.
Texas A&M University
Wtamu Virtual Math Lab: Intermediate Algebra
This site is a tutorial for students in algebra 2 or for those who need a refresher. The site has explanations, definitions, examples, practice problems and practice tests are found covering topics such as linear equations, graphing,...
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.
The Franklin Institute
Frankin Institute Online: Group Graphing
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.
Texas A&M University
Wtamu Virtual Math Lab: Intermediate Algebra: Graphing Linear Equations
A simple tutorial that will show you how to graph linear equations and functions after finding the x- and y-intercepts. Provides definitions, steps for sketching a graph, and several examples of linear equations and their graphs....
Curated OER
Mathn stuff.com: Vertical Line Test
Defines the vertical line test and provides a diagram showing graphs which pass and fail the test. Also provides several links for further information.
Richland Community College
Richland Community College: Graphs of Functions
This site from the Richland Community College provides graphs of Functions offers loose definitions of many terms relative to the graphing of functions.
Math Graphs
Houghton Mifflin: Math Graphs: Vertical Line Test 7 [Pdf]
The handout investigates whether y is a function of x. The practice exercise is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Vertical Line Test 8 [Pdf]
The handout investigates whether y is a function of x. The practice exercise is available in PDF format.
Windstream
Ojk's Precalculus Study Page: Functions
An introduction to the basic terminology of functions, including how to use the vertical line test on the graph of a relation as a means of testing whether or not it is a function.
Other
Linear Functions, Slope and Regressions
Find activities here for linear functions, slopes and regression lines. Use them for classroom work or individual assignments.
California State University
Ca State University, San Bernadino: Graphing Techniques
A survey of math graphing techniques includes horizontal and vertical shifts, stretching, lines of symmetry, even and odd functions, and absolute value functions.
PBS
Pbs: Logical Leaps: Graphing Inequalities: Fractions and Decimals From 0 to 1
In this interactive, use logic to solve three riddles involving high-jump performers in a flea circus. Then, using knowledge of inequalities, place the fleas in the appropriate range on a vertical number line. Numbers are randomized so...
Varsity Tutors
Varsity Tutors: Hotmath: Graphing Calculator Practice Problems: Point, Line, Planes, Angles
Practice using your graphing calculator for drawing and labeling points, lines, planes, and angles. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under each...