# 100's of Vertices all with different Y Coordinates need to be moved to same Y coordinate plane

All these vertices have different Y coordinates yet when I select them all, I cannot move all of them to the same plane of a Y coordinate. How can I move all of them without tedious work?

Change the pivot point to 3D cursor
Press s to enable scale mode, then press y to restrict scaling in the Y axis. Scale "down" to as close to 0 as possible, or type 0. All the vertices will snap to the cursor's Y position while maintaining their original X and Z coordinates.