- $ \\\frac{{x + 1}}{{ - 2}} = \\\frac{{y - 3}}{{ - 2}} = \\\frac{{z - 2}}{{ - 4}}$
- $ \\\frac{{x + 1}}{2} = \\\frac{{y - 3}}{{ - 4}} = \\\frac{{z - 2}}{1}$
- $ \\\frac{{x - 2}}{{ - 1}} = \\\frac{{y + 4}}{3} = \\\frac{{z - 1}}{2}$
- $ \\\frac{{x - 1}}{2} = \\\frac{{y + 3}}{{ - 4}} = \\\frac{{z + 2}}{1}$