Which one of the following plot will be a hyperbola at constant temperature ?

Which one of the following is the correct PV vs P plot at constant temperature for an ideal gas ? (P and V stand for pressure and volume of the gas respectively)

Which of the following will give a linear plot at constant pressure ?

Which of the following will give a linear plot at constant pressure ?

Which of the following can maintain a constant body temperature –?

The slope of the plot between pV and p at constant temperature is

The slope of the plot between pV and p at constant temperature is