Incorrect. Try using the substitution method to think about this system. If $\displaystyle{y}={0}\usepackage{cmbright}\Huge\$ , then $\displaystyle{0}={{x}}^{{2}}\usepackage{cmbright}\Huge\$ . What must x be? How many $\displaystyle{\left({x},{y}\right)}\usepackage{cmbright}\Huge\$ values will make this system true?