Geogebra - What Is This?

In this activity we will investigate lines on a coordinate system.

  1. Load this Geogebra file

You should see this graph.
  1.  Now type in the new equation y = x + 2

You should see the graph move upwards

  

 
Questions
  1. What happened to the line when you added 2 to the equation?
  2. What do you expect will happend when you subtract 2 from the equation y = x?
Activities
  1. Change the equation to show the lines formed by y = x2
  2. Save your edited shape in your "Maths is boring" folder.
  3. Email a copy of your Geogebra shape to your teacher.
  4. Do you think this graph is like the other graphs?