This is a graph of the equation $\displaystyle{y}=-\frac{{1}}{{2}}{{x}}^{{2}}\usepackage{cmbright}\Huge\$ . Notice that the original equation is $\displaystyle{y}=-\frac{{1}}{{2}}{{x}}^{{2}}+{4}\usepackage{cmbright}\Huge\$ ; how does the $\displaystyle+{4}\usepackage{cmbright}\Huge\$ at the end of the equation affect the parabola?