Which step has a mistake and why?PLEASE HELP

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

Explain how you can show five less than a number using an algebraic expression

What is the value of 13x^-3y^-1 when x=-1 and y=4