Write the equation of locus of a point whose distance from y-axis is always equal to the double of its distance from x-axis.

Find the equation of the locus of a point whose distance from the y-axis is equal to its distance from (2,1,-1).

Find the equation of locus of a point whose distance from z-axis is equal to its distance from xy-plane.

Find the equation of the locus of a point whose distanace from the z-axis is equal to its distance from the xy-plane.

The equation of the locus of the point whose distance from x - axis is twice its distance from the y - axis, is

Find the equation of the locus of a point which moves so that its distance from the x-axis is double of its distance from the y-axis.

Find the locus of point whose distance from the origin is 5.

Find the locus of a point whose distance from x-axis is equal the distance from the point (1, -1, 2) :

Find the equation of the locus of point whose distance from the xy-plane is equal to its distance from the point (-1,2,-3).

Find the locus of a point whose distance from (a, 0) is equal to its distance from the y-axis.

Find locus of a point so that its distance from the axis of x is always one half its distance from the origin.