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Prerequisite tips for the “Straight Line Graph”

Linear function is one whose graph is a straight line. These are useful in representing many real world situations.

By using the properties of linear functions, we can graph them without having to plot many individual points.

 

THE TIP

Drawing a straight line graph is very easy.

For example:

Consider the Equation: ax+by =c.

When y=0,x=c/a and

when x=0,y=c/b.

-Clearly these points cut the x and y axis respectively.

-Draw a straight line through these points and the straight line graph is ready.This won't take more than 2 minutes.

Example1: x+y=2

                 When x=0 then y=2

                 When y=0 then x=2 

Here are couple of examples on clay6 based on the above tip:

http://clay6.com/qa/2627

http://clay6.com/qa/2643

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