Incorrect. Do all of the points you selected for $\displaystyle{6}{x}-{3}{y}\le{12}\usepackage{cmbright}\Huge\$ make it a true statement when they are inserted into that inequality? Likewise, do all of the points you selected for $\displaystyle{x}\le-{y}\usepackage{cmbright}\Huge\$ make it a true statement when they are inserted in that inequality? Are there any points that you missed?