Which of the following trigonometric expressions represents an inverse function?

Need ! give step by step solutions on how to solve number one \frac{9-2\sqrt{3} }{12+\sqrt{3} } number two x+4=\sqrt{13x-20} number three (domain and range) f(x)=2\sqrt[3]{x} +1

Which equation represents the function on the graph?

Given that (6,9) is on the graph of f(x), find the corresponding point for the function f(x - 2). enter the correct answer.