This is all the info i was given to answer these problems. I am struggling to get the right answers.

1

Find all points (x,y) where f(x,y) has a possible relative maximum or minimum. f(x,y) = - 2x~+7xy - 6y +x+y What are the possible point(s)? (Type an ordered pair. Type an exact answer in simplified form. Use a comma to separate answers as needed.)Find all points (x,y) where f(x,y) has a possible relative maximum or minimum. f(x,y) = 6x* - 12xy + 3y