def lin_AAIMON_slope_eq(a, x):
    """Function for linear slope equation

    Parameters
    ----------
    a : float
        Value for the slope
    x : float
        Value on the x-axis

    Returns
    -------
    y : float
        Y value for linear slope, based on x, where y-axis intercept is 1.0.
    """
    y = a * x + 1
    return y