Answer:
a. {-2, 0, 2, 4}
Explanation:
The set of values of the Domain of any graph are the set of x-values (input) that are plotted on the x-axis against the y-values.
In the graph given, the set of x-values that represents the Domain is: {-2, 0, 2, 4}. These cam be referred as the input value as well.