7. Need help with this question.

Find all points where the function has any relative extrema. Identify any saddle points. f(x,y) =2x +3xy +4y +6x-7y Find all points where the function has relative maxima. Select the correct choice below and fill in any answer boxes within your choice. O A. The point(s) is(are) (Simplify your answer. Type an ordered pair. Use a comma to separate answers as needed.) O B. There are no relative maxima. Find all points where the function has relative minima. Select the correct choice below and fill in any answer boxes within your choice. O A. The point(s) is(are) (Simplify your answer. Type an ordered pair. Use a comma to separate answers as needed.) B. There are no local relative. Identify any saddle points. Select the correct choice below and fill in any answer boxes within your choice A. There is(are) saddle point(s) located at (Simplify your answer. Type an ordered pair. Use a comma to separate answers as needed.) B. There are no saddle points