At a particular temperature, pV= constant p1V1=p2V2=p3V3 As, V1>V2>V3, therefore we can say, p1<p2<p3.
It is clear that slope of V1 is more than V2. So, the growth of the plot between p and T at V1 volume is higher. Since, for ideal gas p is inversely proportional to volume V. Thus, p1 will be less than p2 is lesser than p3. So, p1<p2<p3.