Lines and Slope  Chameleon Home  Ask Dr. Math 

A Line with the Right Slope Joan used the following directions to graph a line identical to the green line we had drawn: We need to turn these directions into an equation. Making an equation will actually be easier if we follow the directions backward:
Drawing a Line with the Right Slope Let's try to write an equation for a line with a slope of 3. Since lots of different lines have slopes of 3, we'll try to keep things simple by writing an equation for the line that goes through the origin. Notice that a yellow fly is sitting on this line at point
We can start by making a table with the
Do you see a pattern in these numbers? Look at the point that the fly is sitting on. When
It looks as if 
Please send questions, comments, and suggestions
to Ursula Whitcher
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