Trying to find the surface area and can not get the answer.

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

Which is the focus of a parabola with equation y2=4x

Ineed to know how to write question one in mathematical terms