can anyone help me to find distance between plane?

Question

anonymous · Answer

P1(s,t)=(-3,4,-9)+s(9,-5,9)+t(3,-2,3)
p2(s,t)=(5,0,3)+s(-9,2,-9)+t(-4,7,-4)

anonymous · Answer

find the distance between two plane & also show them are parallel..anyone can help?

anonymous · Answer

If the planes are parallel, the vectors perpendiculars to them should be parallel. 
So if you can find the  perpendicular vectors for each of the plane and then prove they are parallel then the planes are parallel. If they are not parallel the planes are nor parallel.
Try that out!

anonymous · Answer

how about the distance?

anonymous · Answer

Take any point on one of the plane by choosing value of s and t. Call this the vector R.
Then add to R another vector which dN. Here N is the normal to the plane and d is a real number. So far, d is the only variable here.
Now R+dN will touch the other plane for some value of d and that value of d is the distance between the planes!!