I am revising on sketching curves. But I am very confused about the following even though I have become very good at sketching graphs. An example from the book is: Given that: i) f(x) = x^3 ii) g(x) = x(x - 2) Sketch the curves with equation y=f(x + 1) and g(x +1) I don't understand the example that the book provides. Not because I don't know how to sketch the curve but the use of g(x) is what I don't understand. Somewhere in the example workout it says: g(x) = (x - 1)^2 so -> g(x) = f(x - 2) Also h(x) = x^2 + 2 so -> h(x) = f(x) + 2 Please help as I would like to finish this chapter sooner. The use of h(x) and g(x) is what I don't understand. I will also appreciate any links that you may provide. Thanks.