2.9: Identifying functions and inverses from graphs

0606/23/M/J/17 — Question 2 · 4 marks

2.9 diagram2.9 diagram2.9 diagram
The four graphs above are labelled A, B, C and D.
(i)
Write down the letter of each graph that represents a function, giving a reason for your choice.
[2]
(ii)
Write down the letter of each graph that represents a function which has an inverse, giving a reason for your choice.
[2]