Level:
Project ID:
9000101010
Accepted:
1
Clonable:
0
Easy:
0
Determine whether the following two lines are identical, parallel, intersecting or
skew.
\[\begin{aligned}
a\colon x & = t, & &
\\y & = -t, & &
\\z & = 1 - t;\ t\in \mathbb{R} & &
\end{aligned}\]\[\begin{aligned}
b\colon x & = -s, & &
\\y & = s, & &
\\z & = -1 + s;\ s\in \mathbb{R} & &
\end{aligned}\]
parallel, not identical lines
skew lines
intersecting lines
identical lines