6. (10 pts) Given three points Pa= (1,2,3), =(2,4,6), Pa=(1,2,0) and the vector V1 = (1,2,3). (1pts) Compute Pi P2 (lpts) Compute P,F . (3pts) Compute P1P2 x PP3 . ã¼) (1pts) Compute IRB Ã . (4pts) Find the values of abed so that the plane ax + by + cz +d=0 describes the plane going through P1, P2 and P3.