Question: what are the characteristics of the graph?
Answer: The set of x-coordinates of the set of points on a graph; the set of x-coordinates of a given set of ordered pairs. The value that is the input in a function or relation.
An example of some of the domain numbers of the function f(x)= 2x+5 would be 1, 3, 5, 7 and so on.
Domain is what can go into a function.