Find the equation of the set of points which are equidistant from the points (1, 2 , 3) and (3, 2, -1)
y + 2z = 0
x - 2y = 0
x - 2z = 0
x + 2z = 0
The equation representing the set of points which are equidistant from the points (1, 2 , 3) and ( 3 , 2 , -1) is