from typing import Tuple


def coord_to_address(s:Tuple[int, int], magnification:int)->str:
    """converts coordinate to address

    Args:
        s (tuple[int, int]): coordinate consisting of an (x, y) tuple
        magnification (int): magnification factor

    Returns:
        str: a string consisting of an x_y_z address
    """

    x = s[0]
    y = s[1]
    return f"x{x}_y{y}_z{magnification}"