# Linear Algebra

posted by
**Ben** on
.

1. Considering 2 planes with equations:

x + 2y - 3z = 1

x + 2y - 3z = 18

(a) Given (a,b,c) a point on the first plane, find the point where the line perpendicular to both planes passes by (a,b,c) and through the 2nd plane.