The equations $y=2x$y=2x, $y=2x+6$y=2x+6 and $y=2x-8$y=2x−8 have been graphed on the same number plane:
What do all of the equations have in common?
What do you notice about the graphs?
What can you conclude from the answers above?
Apply co-ordinate geometry techniques to points and lines
Apply co-ordinate geometry methods in solving problems