Check $\displaystyle{x}={2}\usepackage{cmbright}\Huge\$ and $\displaystyle{y}={0}\usepackage{cmbright}\Huge\$ in both inequalities:

$\displaystyle{0}<{2}-{1}\usepackage{cmbright}\Huge\$ and $\displaystyle{2}+{1}>{0}\usepackage{cmbright}\Huge\$ are both true.

Check $\displaystyle{x}={4}\usepackage{cmbright}\Huge\$ and $\displaystyle{y}={2}\usepackage{cmbright}\Huge\$ in both inequalities:

$\displaystyle{2}<{4}-{1}\usepackage{cmbright}\Huge\$ and $\displaystyle{4}+{1}>{0}\usepackage{cmbright}\Huge\$ are both true.