00:01
In this question we are given two equations of the plane.
00:03
So the first plane is 4x -5y plus z is equal to 4.
00:10
Second equation of plane we have minus 2x minus y plus 5z is equal to minus 4.
00:17
We have to find parametric equation of the line of intersection of line of intersection of both the planes.
00:35
This is what we have been asked from us in the question.
00:38
Let us find out point of intersection one of the point of intersection of both the planes.
00:48
So point of intersection for both the planes we can find out as let us take z is equal to 0.
00:56
So we have 4x minus 5y is equal to 4 and we have minus 2x minus y is equal to minus 4.
01:05
So if you multiply this by 2 then we have 4x minus 5y is equal to 4 minus 4x minus 2y is equal to minus 8.
01:17
On adding this we get minus 7y is equal to minus 4 which implies you have y is equal to 4 by 7.
01:27
So the coordinates of y are 4 by 7 and we have 4x minus 20 by 7 is equal to 4.
01:35
So this implies you have 4x is equal to 48 by 7...