(2
5
3
)
9
r
i
j
k
+
+
=
r
and through the point
(2, 1, 3) 11 Find the equation of the plane through the line of intersection of the
planes x + y + z = 1 and 2x + 3y + 4z = 5 which is perpendicular to the plane
x – y + z = 0 © NCERT
not to be republished
 MATHEMATI CS
494
12