x-start or x-finish for 2D graph as a variable?

[Support]

Hello Clive,

Thank you so much for taking the time to share this activity on the forums, it is great to see how it has come together. With your permission I would like to add it to a growing collection of free activities that I have been putting together to test out a beta feature called Autograph Activities.

You can see my collection so far at http://www.autograph-maths.com/activitie...nwoodhead. There is also a superb selection my Mr Barton Maths http://www.mrbartonmaths.com/autographact.htm.

If you would be happy for me to add your activity to my page please send me the instructions you would like to include. Either here or email support AT autograph-maths.com.

Thank you again,

Simon