Step Twelve
If students have experience with y = mx + b you can specifically talk about changing the slope and the yintercept and how this changes the line.
Students without this experience can explore what happens but not use the specific vocabularly.
There are several ways to change the equation of the line that is displayed. One way is to change the equation that you entered first from y=x+2 to one of the examples.
Tap the equation  enter a different equation. Here are some possibilities:
 y = 2x + 2
 y = 2x + 5
 y = x + 10
 y = x  2
 y = 5x  1
