Both the lines 4x+5y=0,7x+2y=0 pass through origin.

D is the point of intersection of 4x+5y=0&11x+7y=9
So upon solving we get the coordinates of point D=(35,−34)
Also, point B is the point of intersection of 7x+2y=0&11x+7y=9
So, coordinates of point B=(−32,37)
The diagonals of parallelogram bisect each other, so the mid point of BD is
(235−32,23−4+37)=(21,21)
The equation of diagonal AC is
(y−0)=21−021−0(x−0) i.e., y=x
Therefore, the diagonal AC passes through (2,2).