Towers cant be placed on path, without looping

In the video the instructor asks us to use what we've previously learned to solve the problem. At this point we haven't learned loops yet so I'd like to stick to the lesson and not use loops for this solution.
We need to check that the location of the tower is not on the path before placing it. And we should use the example of "OnMap" on the MapLocation class to achieve this. Here is what I've done so far (and what I need help with).

1. On the Path class I wrote a OnPath method and used the same X and Y parameters that I got from the map we've created on Main to check for it. I believe this would be correct as long as the map in main keeps those parameters, but if it changes then this would have to change as well. Is there a better solution for this?

   public bool OnPath(Point point) { return point.X == 0 || point.X == 1 || point.X == 2 || point.X == 3 || point.X == 4 || point.X == 5 || point.X == 6 || point.X == 7 && point.Y == 2; }

2. On the Tower class I get no compiler errors but I would like to know if this fits the requirements. I'm not sure if it was correct to add a 'Path path' parameter on the Tower constructor and I don't know whether the "if (!path.OnPath(location))" is actually right because on OnMap in MapLocation it was "if (!map.OnMap(this))". When I used "(this)" here I would get compiler errors

class Tower { private readonly MapLocation _location; private readonly Path _path;

public Tower (MapLocation location, Path path)
{
   _location = location;
   _path = path;

   if (!path.OnPath(_location))
   {
     throw new OutOfBoundsException("Towers can't placed on the path");
   }
}

}