Equation for the graph of the ideal gas law

Question

How do you answer this question?

For a plot of V vs. number of moles (n), where V is on the y-axis and n is on the x-axis, write an expression for the slope in terms of pressure, temperature and R.

Answer 1

PV = nRT

V = nRT/P

V = (RT)(n) * 1/P

slope = RT/P