import math


def calc_linear_distance(x1, y1, x2, y2):
    """
    Calculates the distance between 2 given points
    :param x1: x coordinate at point 1
    :param y1: y coordinate at point 1
    :param x2: x coordinate at point 2
    :param y2: y coordinate at point 2
    :return: (float) Linear Distance from point to point
    """
    return math.sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2)