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Step 1
Draw a number line. I like to make mine simple. I will draw a horizontal line with arrows on each end. The center of the line will have zero as a reference for the numbers you will graph.
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Step 2
I will then place a dot on the number involved in the inequality. If I'm graphing x < 4, then I will place an open dot on the 4. The dot is open because I'm graphing the numbers less than 4. If I were graphing the numbers less than or equal to 4 I would place a closed dot over the 4.
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Step 3
Here is an example of "x is greater than or equal to 3"Now I have to draw another line in the direction of the numbers I want to include in the graph. If I'm graphing x > 3, then I am graphing "the numbers greater than 3". This means I have to draw a line with one arrowhead (also called a ray in Geometry) pointing to the right since the numbers greater than 3 are located to the right of 3.
