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