Hi guys

A ladder that is 6 m long rests with one end on the horizontal ground and the other end against a vertical wall. Considering the ground and the wall as the X- and Y-axis respectively, find the locus of the midpoint of the ladder.

For this question, I havn't been able to get far

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I let the pt the ladder is touching the horizontal ground (and thus the X-axis) be x AND the pt the ladder is touching the wall (the Y-axis) be y. Thus, the midpt is (x/2,y/2).

I've tried to work it out the same method as the previous q.s in the txtbk e.g. saying this distance = that distance to get the locus.

Please please help me!