What physical quantities may $X$ and $Y$ represent ? ($Y$ represents the first mentioned quantity)
APressure $v/s$ temperature of a given gas (constant volume)
BKinetic energy $v/s$ velocity of a particle
CCapacitance $v/s$ charge to give a constant potential
DPotential $v/s$ capacitance to give a constant charge
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DPotential $v/s$ capacitance to give a constant charge
d (d) From $V = \frac{Q}{C}$. For constant $Q$, $V \propto \frac{1}{C}$ i.e. ‘$V$’ varies hyperbolically with $C$.
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