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Let's plot  ( 3, 2 )  ...  x = 3  ...

So, we'll go over to positive 3 on the axis...

02-lines-08.gif

and  y = 2  ...

So, we'll go up 2 (the positive direction) in the y direction...

a graph showing the point ( 3, 2 )

What about  ( 0, -5 ) ?

 x = 0  ...  So, we don't go anywhere in the x direction...

 y = -5  ...

So, we go down 5 (because it's negative) in the y direction...