Question

In the diagram C is a point of the Y axis such that A(0;4) B(4;-4) and D(-4;2) are vertices of a parallelogram ABCD K is a point (0;-2'1/4) and L is a point of AB 1, prove that AD is perpendicular to AB 2, give a reasons why parallelogram ABCD is a rectangle. 3, determine the equation of KL in form of Y= mx+c. 4,write with reasons the coordinates of C

Answer 1

refer to pic above .....