Question

what is the domain of this function?
a. {3}
b. {3, 9, 12}
c. {-2, 2, 3, 4}
d. {-2, 2, 3, 4, 9, 12}

Explanation:

Step1: Recall the definition of domain

The domain of a function (represented as a mapping diagram) is the set of all input values (the values in the first oval).

Step2: Identify the input values

Looking at the first oval, the values are -2, 3, 4, and 2. So we list these values in a set.

Answer:

C. {-2, 2, 3, 4}