I've got this question about finding the plane equation that goes through:
A=(-1,2,0) B=(1,2,0) C=(0,3,-1)
So shall i use the cross product as ABxAC or CAxCB as C is perpendicular to A and B?
But please don't say "C is perpendicular to A and B". A, B, and C are points, not lines or vectors and so are not perpendicular to anything.