I'm confused can someone maybe help me? (Picture below)

Need on this one asap im almost done with this subject

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?

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