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

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

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

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

The locus of a point whose distance from the x-axis is one-third of its distance from the origin is

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

Find the locus of a point equidistant from the point (2,4) and the y-axis.

Find the locus of a point which moves in such away that the square of its distance from the point (3,-4) is numerically equal to its distance from the line 5x-12y=13 .