The equation of the righat bisecting plane of the segment joiningteh points `(a,a,a) and (-a,-a,-a),a!=0` is (A) `x+y+z=a` (B) `x+y+z=3a` (C) `x+y+z=0` (D) `x+y+z+a=0`

The equation of the righat bisector plane of the segment joining (2,3,4) and (6,7,8) is (A) x+y+z+15=0 (B) x+y+z-15=0 (C) x-y+z-15=0 (D) none of these

The equation of the plane containing the line 2x+z-4=0 nd 2y+z=0 and passing through the point (2,1,-1) is (A) x+y-z=4 (B) x-y-z=2 (C) x+y+z+2=0 (D) x+y+z=2

The equation of the plane containing the line 2x+z-4=0 nd 2y+z=0 and passing through the point (2,1,-1) is (A) x+y-z=4 (B) x-y-z=2 (C) x+y+z+2=0 (D) x+y+z=2

A plane which passes through the point (3,2,0) nd the line (x-4)/1=(y-7)/5=(z-4)/4 is (A) x-y+z=1 (B) x+y+z=5 (C) x+2y-z=1 (D) 2x-y+z=5

The equation of the plane parallel to the plane 2x+3y+4z+5=0 and passing through the point (1,1,1) is (A) 2x+3y+4z-9=0 (B) 2x+3y-4z+9=0 (C) 2x-3y-4z+9=0 (D) 2x-y+z-9=0

for every point (x,y,z) on the y-axis: (A) x=0,y=0 (B) x=0,z=0 (C) y=0,z=0 (D) y!=0,x=0,z=0

The equation of the plane passing through the intersection of the planes x+2y+3z+4=0a dn 4x+3y+2z+1=0 and the origin ils (A) 3x+2y+z+1=0 (B) 3x+2y+z=0 (C) 2x+3y+z=0 (D) x+y+z=0

The equation of the plane through the point (1,2,-3) which is parallel to the plane 3x-5y+2z=11 is given by (A) 3x-5y+2z-13=0 (B) 5x-3y+2z+13=0 (C) 3x-2y+5z+13=0 (D) 3x-5y+2z+13=0