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Forms of Linear Equations
by Kathy Jensen
Pages 2 and 3 of 13
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x-axis
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For today's visit we will see the lines that span the coordinate plane.
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y-axis
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Equations for straight lines come in three forms.
There is standard, point-slope and just one more.
The most used form is slope intercept for sure.
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Slope intercept form: y = mx +b,
will likely be your favorite!
You just wait and see!
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This form makes it easy to see where the line will fall, is it positive or negative or no slope at all?
Look at the "m" to see. "m" is the slope, it tells us just how steep our lines will be.
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y = x+b
m
Skier Wave.gif
Ted the Skier helps us decide whether our line has a positive, negative, or no sign.
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