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.
Drawing a straight line graph is very easy.
Consider the Equation: ax+by =c.
When y=0,x=c/a and
-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.
When x=0 then y=2
When y=0 then x=2
Here are couple of examples on clay6 based on the above tip: