Number Line

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To draw a number line, you sweep out a rectangle.  If the rectangle is wider than it is tall, FX Draw will create a horizontal number line.  If it is taller than it is wide, FX Draw will create a vertical number line.  When you have created the rectangle, FX Draw will create a blank number line.  To add a graph, right click on the number line.

 

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This dialog box allows you to set up the axis in exactly the same way as the function graphing tool.   You enter the graphs in terms of x and you can enter the following combinations (using –3 as the number – you obviously can use any number).

 

x > -3                x greater than negative three

x >= -3                x greater than or equal to negative three

x < -3                x less than negative three

x <= -3                x less than or equal to negative three

x = -3                x equals negative three

x <> -3                x is not equal to negative three.

 

You can also place x in a range.

 

-3 < x <= 2        x is greater than negative three and less than or equal to two.

 

The Offset Lines option allows you to produce output such as this.

 

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Use Brackets allows you to use parentheses and square brackets instead of open and closed circles.

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Available Parameters in Number Line

 

$f1                - definition of function 1

$f2                - definition of function 2

$f3                - definition of function 3