Adsorption of a gas follows Freundlich adsorption isotherm. In the given plot, $\mathrm{x}\mathrm{}$ is the mass of the gas adsorbed on mass $\left(\mathrm{m}\right)$ of the adsorbent at pressure (P). if $\frac{\mathrm{x}}{\mathrm{m}}\propto {\mathrm{P}}^{(1/\mathrm{y})}$ find the magnitude of $\mathrm{‘}\mathrm{y}\mathrm{’}$ is ------.