A(-3,-2) B(8,4)are the ends of the diameter of a circle.

the tangent of the circle at point B is -11x+6y+64=0

the line L passes through A and the origin. line L has a gradient of 2/3

what is the coordinates that the line L and tangent at point B cross??

(this question had 4 parts, ive done the first 3 and i think ive got the calculations right. im just stuck on the 4th part)

please help thanks