Question

The mapping diagram shows a function Q(x).

2------->1
4------->2
6------->3
8------->4
which mapping diagram shows the inverse of Q(x)?

Answer 1

Answer: B. 1------->2

2------->4

3------->6

4------->8

Step-by-step explanation: We are given mapping diagram of function Q(x).

2------->1

4------->2

6------->3

8------->4

We need to find the mapping diagram of inverse of Q(x).

Note: The inverse function switches the x and y mapping to y and x mapping.

(x,y) would become (y,x) or (a,b) would become (b,a).

So, each mapping would just flip and we get

1------->2

2------->4

3------->6

4------->8

Which is the mapping in option B.