Definition: A line graph is a picture of a table of values. The table must have exactly 2 rows.

Of course, the table can have exactly 2 columns. In textbooks, we like rows because it saves space    

Rule: Each point on the line graph is a column (2 pieces of data).

Here is a table of data with exactly two rows.

Year 2001 2002 2003 2004 2005 2006 2007 2008
Apples on my Tiny Tree 3 4 6 7 7 3 5 7
Rule: The data in the top row goes horizontally to the right and the data in the bottom row goes vertically up the side.
InterActivity   Directions for InterActivity
  • In column B (Apples), double-click in a cell, type in a number between 0 and 10 and hit Enter. Check the line graph for changes.
  • Make-up a "number of apples" for the year 2009. Where will this point be on the graph?
    • Input the year 2009 (double-click on A10, type in 2009 and hit Enter).
    • Input the number (double-click on B10, type in the number and hit Enter).
    • Check whether the plotted point agrees with your thinking.
  • Do this again for the year 2010.
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Rule: If the data is in columns like a spreadsheet, then
  the data in the first column goes horizontally to the right of the graph and
  the data in the second column goes vertically up the side of the graph.

Related Topics

bar graphs


Global Line Graphs
Brief Interactivities involving line graphs - a starter for understanding lines, linear equations and the Cartesian plane coordinate system
Grade 3-10    Interactivities start at 3rd grade level on up
Strand Probability, Data Analysis and Statistics / Algebra and Functions / Geometry and Measurement
Standard CA 3SP1.3,CA 4MG2.1, CA 4MG2.2, CA 4MG2.3
Keywords line graph, data, plot, ordered pair, cartesian plane, coordinates, points, grid, x-coordinate, y-coordinate
Comments none
Download GeoGebra is freeware that can be used offline. After installing GeoGebra, go to the InterActivity and select command: File -> Save. If there is no command menu, just double-click on the InterActivity. It will open in a new window with command menu.
Author LFS - contact - website
Type Freeware - Available for Offline and Online Use - Translatable (html)
Use Requires sunJava player
 Up one level


Page last modified on September 11, 2009, at 09:01 AM