Final answer:
To find the equation of the plane that passes through a given point and contains a line of intersection of two planes, we can use the cross product of the normal vectors of the planes and the given point.
Step-by-step explanation:
To find the equation of the plane that passes through the point (1, 2, 1) and contains the line of intersection of the planes x + 2y + 3z = 1 and 2x - y + z = -3, we can use the following steps:
- Find the direction vector of the line of intersection by taking the cross product of the normal vectors of the two planes.
- Use the given point and the direction vector to write the vector equation of the line.
- Find the equation of the plane by substituting the coordinates of the given point and the direction vector into the equation of a plane.
The equation of the plane is obtained by simplifying the expression from step 3.