- $ \\\Delta :\\\frac{{x - 2}}{1} = \\\frac{{y + 2}}{4} = \\\frac{{z - 1}}{5}$.
- $ \\\Delta :\\\frac{{x - 2}}{{ - 1}} = \\\frac{{y + 2}}{5} = \\\frac{{z - 1}}{4}$.
- $ \\\Delta :\\\frac{{x - 2}}{{ - 1}} = \\\frac{{y + 2}}{4} = \\\frac{{z - 1}}{3}$.
- $ \\\Delta :\\\frac{{x - 2}}{1} = \\\frac{{y + 2}}{3} = \\\frac{{z - 1}}{4}$.