I am using the testifier command,
/testfor @a[x=-436,y=9,z=-758], but instead of testing for a player at those coordinates, it is testing everywhere, and finding me. Any help?
Your command does not work as supplying a
z modifier only changes the location of which the command block detects from.
If you'd like to detect for a player at that location, add the
r (radius) modifier to your selector.
By default, the radius (if one is not specified) is infinite (also called 'none').
You'll want to use: