Task 1: Cubics in the form y=ax^3
a) use technology to assist you to draw sketch graphs for y=ax^3 when a= 1,-1,3,-4, 1/2, -1/3
b) what is the geometrical significance of a in y=ax^3? (comment on the sign and size of a)
I always use Excel for things like this. I attach a diagram, showing on a single graph, the functions and , which I produced using Excel in two or three minutes.
Once you have sketched these graphs, study them carefully, looking for similarities and differences between them. You should then be able to find some answers to (b).
Thread closed (you can discuss the matter with me via pm if the situation happens to be different to what I think it is).