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?
Solve problems involving the slope, length, and midpoint of a line segment
Verify, using algebraic techniques and analytic geometry, some characteristics of geometric figures