The X-axis is the perpendicular bisector of the line segment joining the points (3,12) & (x,y). Find (x,y).

Anybody know how to solve this?

Try drawing it on a rough graph. You should be able to see the answer easily.

I have drawn it. I just have issues with noticing where. I did a whole Midpoint eq too, got (0,0) and 4 but I don't think I'm right

Perpendicular means at right angles.

Bisector means cuts exactly in half.

Here is the pic :)