QUESTION 9 The diagram below represents the graph of f(x) = -x(x+4)². A and B are the turning points of the graph. C is the point of inflection of f. D is a point on the Cartesian plane such that AD 1 BD. y D B 9.1 Determine the coordinates of: 9.1.1 A and B 9.1.2 D 9.1.3 C. The points A, B and D can be connected to form a triangle. Calculate the area AABD. 9.2 (6) (2) (3) (2)