If O is the origin and the coordinates of P is (1,2,−3), then find the equation of the plane passing through P and perpendicular to OP.
Given:
Origin O(0,0,0) and point P(1,2,−3)
To find: Equation of the plane passing through P(1,2,−3)=(x1,y1,z1).
The direction ratios of normal OP to the plane are 1−0,2−0,−3−0.
(1,2,−3)=(a,b,c)
The equation of the required plane is a(x−x1)+b(y−y1)+c(z−z1)=0.
1(x−1)+2(y−2)−3(z+3)
x−1+2y−4−3z−9=0
x+2y−3z−14=0
Thus, the equation of the plane is x+2y−3z=14.