The x-coordinate of a point on the line joining the points P(2, 2, 1) and Q(5, 1, – 2) is 4. Find its z-coordinate.
given , the points P(2,2,1) and Q(5,1,-2) of a line
Then equation of line PQ.
coordinates of any point of line PQ is
Now, we have the x cordinates as A
Z cordinate is