Answer:
P
1
:4x−2y+6z=3
P
2
=4x−2y−2z=6
P
3
=−6x+3y−9z=5
P
4
=2x−y−z=3
Step-by-step explanation:
The coefficients of each x,y,z give the direction vector of the normal vector of the plane.
Parallel but not identical condition will be that:
x
2
x
1
=
y
2
y
1
=
z
2
z
1
=
c
2
c
1
where each term is the coefficent of x,y,z respectively.
By observation we see P
2
and P
3
are parallel but not identical.