consider the function f defined by f(x)=1/x-2 , and, let (C) be its representative curve.
a) find the domain of f
b) find f(-1) , f(0) and f(1)
c)draw the curve (h) of the function defined by g(x) = 1/x
d)Explain how can we use (h) to construct (C)

I have solved a,b and c but i need some help in d , i have no idea