Can someone please explain how to answer this question.

Please provide an example with all workings included.

Thanks

Draw the investment frontier (Capital Market Line) (in the plane E(Rp)-op) of the optimal portfolio with a risk-free asset with a return of r. - - Draw the investment frontier (Capital Market Line) (in the plane E(Rp)-op) of the optimal portfolio with a risk-free asset with a return of r