Which is the definition of a ray?

a. a part of a line that has one endpoint and extends indefinitely in one direction
b. the set of all points in a plane that are a given distance away from a given point
c. lines that lie in the same plane and do not intersect
d. a part of a line that has two endpoints

Sample response: if the graph passes the horizontaline test, then the function is one to one. functions that are one to one have inverses that a therefore, the inverse is a hinction compare your response to the sample response above. what did you include in your explanation? a reference to the horizontal-line test d a statement that the function is one-to-one the conclusion that the inverse is a function done