Incorrect. Substitute the slope of $\displaystyle\frac{{1}}{{2}}\usepackage{cmbright}\Huge\$ into the equation $\displaystyle{y}={m}{x}+{b}\usepackage{cmbright}\Huge\$ to get $\displaystyle{y}=\frac{{1}}{{2}}{x}+{b}\usepackage{cmbright}\Huge\$ . Then substitute the values of x and y from the ordered pair into the equation and solve for b. Finally, substitute the value of b into the equation $\displaystyle{y}=\frac{{1}}{{2}}{x}+{b}\usepackage{cmbright}\Huge\$ .