A. A(3;0;-1)

B. A(0;3;1)

C. A(0;3;-1)

D. A(-1;0;3)

A. N (3;4;8)

B. N (3;0;–4)

C. N (3;0;8)

D. N (3;4;–4)

A.  $d: \frac{x-1 }{-3 }=\frac{y }{2 }=\frac{z-4 }{1 }$

B.  $d: \frac{x-1 }{3 }=\frac{y }{1 }=\frac{z-4 }{1 }$

C.  $d: \frac{x-1 }{-3 }=\frac{y }{-1 }=\frac{z-4 }{1 }$

D.  $d: \frac{x-1 }{-3 }=\frac{y }{2 }=\frac{z-4 }{-1 }$

A.  $-x+y=0$

B. $3x-2y-z+3=0$

C. $x+y+z-2=0$

D. $3x-2y-z-3=0$

A.  $\left\{\begin{array}{l}x=t\\ y=7+3t\\ z=2t\end{array}\right.$

B. $\left\{\begin{array}{l}x=2t\\ y=7-3t\\ z=t\end{array}\right.$

C. $\left\{\begin{array}{l}x=t\\ y=7-3t\\ z=2t\end{array}\right.$

D. $\left\{\begin{array}{l}x=-t\\ y=7-3t\\ z=2t\end{array}\right.$

A.  $\left\{\begin{array}{l}x = t\\ y = 7 +\hspace{0.17em}3t\\ z = 2t\end{array}\right.$

B. $\left\{\begin{array}{l}x = 2t\\ y = 7 -\hspace{0.17em}3t\\ z = t\end{array}\right.$

C. $\left\{\begin{array}{l}x = t\\ y = 7 -\hspace{0.17em}3t\\ z = 2t\end{array}\right.$

D. $\left\{\begin{array}{l}x = -t\\ y = 7 -\hspace{0.17em}3t\\ z = 2t\end{array}\right.$