If you're wanting to learn how to create this type of file in
@geogebra and are in the London area we've got an
@Advanced_Maths PD day on Use of GeoGebra in GCSE/A level Maths on Fri 1 Mar - beginners (am), advanced (pm) - you can attend either/both:
amsp.org.uk/events/details/5…
f(x)=x³-x is one of my favourite functions for graph transformations. It's got some useful points on it and you can tell the difference between vertical and horizontal stretches.