Which point lies on the line $\frac{x - 1}{2} = \frac{y - 2}{-1} = \frac{z + 1}{3}$?

Explanation

1. 01

   A point on the line is $(1 + 2\lambda, 2 - \lambda, -1 + 3\lambda)$.

2. 02

   $\lambda = 2$ gives $(5, 0, 5)$; the others fit no single $\lambda$.