A.  $\frac{x+1}{-1}=\frac{y+1}{-1}=\frac{z-2}{1}$

B.  $\frac{x-1}{1}=\frac{y}{1}=\frac{z-1}{-1}$

C.  $\frac{x-1}{1}=\frac{y-2}{1}=\frac{z-3}{-1}$

D.  $\frac{x-1}{1}=\frac{y}{-1}=\frac{z-1}{1}$

A.  $\left\{\begin{array}{l}x=2\\ y=3-t\\ z=3-t\end{array}\right.$

B. $\left\{\begin{array}{l}x=-2\\ y=-3-t\\ z=-3-t\end{array}\right.$

C. $\left\{\begin{array}{l}x=-2\\ y=-3+t\\ z=-3+t\end{array}\right.$

D. $\left\{\begin{array}{l}x=2\\ y=-3+t\\ z=3+t\end{array}\right.$

A.  $\left\{\begin{array}{l}\begin{array}{l}x=2+2s\\ y=1-s\end{array}\\ z=-1+3s\end{array}\right.$

B.  $\left\{\begin{array}{l}\begin{array}{l}x=2+3s\\ y=-1+s\end{array}\\ z=3-s\end{array}\right.$

C. $\left\{\begin{array}{l}\begin{array}{l}x=2+2s\\ y=1-s\end{array}\\ z=1+3s\end{array}\right.$

D.  $\left\{\begin{array}{l}\begin{array}{l}x=2+3s\\ y=-1+s\end{array}\\ z=-3-s\end{array}\right.$

A. $\frac{x-1}{1}=\frac{y-2}{-2}=\frac{z+1}{-1}$

B. $\frac{x-1}{1}=\frac{y-2}{2}=\frac{z+1}{1}$

C.  $\frac{x-1}{1}=\frac{y-2}{2}=\frac{z-1}{1}$

D.  $\frac{x-1}{-1}=\frac{y-2}{-2}=\frac{z+1}{1}$

A.  $\left\{\begin{array}{l}x=2\\ y=3-t\\ z=3-t\end{array}\right.$

B. $\left\{\begin{array}{l}x=-2\\ y=-3-t\\ z=-3-t\end{array}\right.$

C. $\left\{\begin{array}{l}x=-2\\ y=-3+t\\ z=-3+t\end{array}\right.$

D. $\left\{\begin{array}{l}x=2\\ y=-3+t\\ z=3+t\end{array}\right.$

A.  $\left\{\begin{array}{l}x=2\\ y=3-t\\ z=3-t\end{array}\right.$

B.  $\left\{\begin{array}{l}x=-2\\ y=-3-t\\ z=-3-t\end{array}\right.$

C.  $\left\{\begin{array}{l}x=-2\\ y=-3+t\\ z=-3+t\end{array}\right.$

D.  $\left\{\begin{array}{l}x=2\\ y=-3+t\\ z=3+t\end{array}\right.$