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Graph a Linear Equation
Understand the relationship between the equation of a line and it’s graph.
Get Ready
Start the MathTrax application.
Select the “Equations” tab at the top of the MathTrax application
Define an Equation
Type the equation y=x+2 in the “Enter Equation” box.
Press Return
View Graph
Identify x-axis and y-axis
Identify origin
Identify y-intercept and x-intercept
Which points fall on the line?
Change the Slope and Y Intercept
Enter the following equations and notice how the slope and y-intercept changes
y = 2x + 2
y = 2x + 5
y = x + 10
y = x - 2
y = 5x - 1
Aligns with NCTM Algebra Standard Grade 6-8
http://standards.nctm.org/document/chapter6/alg.htm
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