Find the projection of the line 3x – y +2z – 1 = 0, x +2y – z = 2 on the plane 3x + 2y +z = 0.

3 answers

All three equations you've given correspond to planes. Which 'line' is supposed to be considered?
probably the intersection of the first two planes.
Find the projection of the line 3x – y +2z – 1 = 0, x +2y – z = 2 on the plane 3x + 2y +z = 0