Let
Then let be the two planes
Find two distinct points on the intersection of and .
First, we have
So, the points in the intersection are those such that
From the first set of equations we have the equations
The second equation implies , and so the first equation implies . Then,
From the second set of equations we have
The first equation implies . The second equation then implies
Therefore, . So, finally we have
Therefore, we obtain the Cartesian equation
Thus, the set of points in the intersection of these two planes are those points such that
In this case is arbitrary. First, taking we have
These implies and . On the other hand, taking we have
These imply and . Hence, we have
how did you assume this.(First, taking z = 6 we have) and then ( On the other hand, taking z = 17 we have)
please let me know as soon as possible . THanks
You can choose any z you like and you will find an x,y solving the equations.