Let be a point which moves upward along the positive -axis and let be a point which starts at and pursues according to an equation which stipulates that the distance from to the -axis is exactly the distance from to the origin. Find the Cartesian equation for the path of pursuit the point traces out.

**Incomplete.**

The phrase “P pursues Q according to an equation which stipulates that the distance from P to the y-axis is exactly 1/2 the distance from Q to the origin” means that x = Y/2, i.e., Y=2x, equation that can be use in y’=(Y-y)/(X-x) for directly finding C2.