(1 point) dy Find using implicit differentiation. 7x2 + 8y = 16 9x + 7y2 Hint: First clear the denominator to get 7x- + 8y = 16(9x + 7y?). dy dr\f\f\f(1 point) For the equation given below, evaluate y' at the point (-1, 2). 5x y - 2x2 = -12. y' at (-1, 2) =(1 point) Let 5 sinc + 7 cosy = 5. dy = dx2(1 point) Find day by implicit differentiation when 2xy + 7y' = 1 d'y(1 point) Find dx2 by implicit differentiation when I COS (y) = 0 d' y da2