4 The graph of a onetoone function fis given Draw the graph
     4. The graph of a one-to-one function fis given. Draw the graph of the inverse function f For convenience (and as a hint), the graph of y =x is also given. yex (5,-5 below. Oc. Choose the correct graph of the inverse function f O D OB.  
  
  Solution
1) points on f(x) i. e ( 2, 4) ( 1, 4) ( -1 , 1) ( -5 , -5)
these points on f^-1(x) would become ( 4,2) ( 4,1) ( 1, -1) ( -5, -5)
The graph containg these points of f^-1(x) will give correct choice:
Option D

