A few tips and tricks to help you when sketching graphs
If you can sketch y=f(x), there are several related functions you can also sketch...
Which curve is which, and how would you plan a route to pass between them?
Can you make a curve to match my friend's requirements?
Mathmo is a revision tool for post-16 mathematics. It's great installed as a smartphone app, but it works well in pads and desktops and notebooks too. Give yourself a mathematical workout!