Answer
When given the graph of a function, its domain can determined by identifying the x-values that are covered by the graph.
Work Step by Step
When given the graph of a function, its domain can determined by identifying the x-values that are covered by the graph.
For example, if the graph is a diagonal line, then the domain will be the set of real numbers as the line goes to the left and to the right without bound.
On the other hand, if the x values covered are only from 0 and above, then the domain will be $[0,+\infty)$.
