A thermodynamic cycle xyzx is shown on a V - T diagram. The P - V...

According to the ideal equation,

$PV = nRT$

In the given $V ‐ T$ diagram,

In process $x \to y$, $V ∝ T$. So, the process is isobaric process.

In process $y \to z$, $V =$ constant. So, the process is an isochoric process.

In process $z \to x$, $T =$ constant. So, the process is an isothermal process.

Analyzing using the ideal gas equation in each process, the $P ‐ V$ graph can be drawn as shown below,