need answers in each number

Consider the function f (x, y) = 8x- - 5y subject to the condition x- + y = 16. 1 Use Lagrange multipliers to find the maximum and minimum values of } subject to the constraint. Maximum: Minimum: Find the points at which those extreme values occur. O (4,0) , (0,4) , and (4,4) O (4,0) , (-4,0), (0, 4), (0, - 4), (4,4) , and (-4, - 4) O (-4,0) and (0, - 4) O (4,0) , (-4,0) , (0, 4), and (0, - 4) O (4,0) and (0, 4) 2. Use Lagrange multipliers to find the maximum and minimum values of f subject to the given constraint. Also, find the points at which these extreme values occur. f (x, y) = xy; 72x2 + 832 = 3600 Enter your answers for the points in order of increasing x-value. Maximum: at ( and ( Minimum: at and