The number of dollars Julia earns by working n hours can be represented by f (n) = 9n. Graph this function and state the domain

Okay so f (n) is the range and n is the domain. The graph should be inclined up crossing (0,0). The domin is (0, infinity) because is she woulds 0 hours then Julia will get paid $0 so it starts at 0 and goes to inifinity.