Recent content by blackjack4401

  1. B

    Find the point of intersection of three planes

    Okay, I can't guarantee if I have understood the question perfectly, but here's what I came up with: Plane 1 normal vector = CA x BA = (0,1,5) x (1,1,8) = (3,5,-1) So the equation can be written as 3x+5y-z+k=0. Since it passes point B, 3(1)+5(1)-(8)+k=0, so k=0. (3+5-8+k=0) The...