Question

What is the domain of the function shown in the mapping?

A. x
B. y = –9, –6, 0, 2, 4
C. x = –9, –6, –5, –3, 0, 1, 2, 4, 6
D. y

Answer 1

A. x = –5, –3, 1, 2, 6

Explanation:

The mapping between sets is shown in the image attached.

Remember that the Input Set represents the domain, the x-values. The Output Set represents the range, the y-values.

So, basically we need to choose the set of x-values which has the same elements than the Input Set showed in the image.

Therefore, the right answer is A, because it has the same elements than the Input Set shown.