Parametric equations

Question

This has 2 or more answers apparently??

 

Answer 1

(1).

The points are P=(1, 2, 3), Q = (0, 0, 2) and R = (6, 0, 0).

The first and third options are correct answers.

Answer 2

(2).a.

The plane equation is x = (-1, 3, 3) + s(-2, 4, -2) + t(2, 2, 2).

Answer 3

2(b).

The plane equation n₁x + n₂y + n₃z = k.