In the following list identify a vector having the same direction as the parametric
line \(p\).
\[ \begin{aligned}
x & = 1 - t, \\
y & = t;\ t\in \mathbb{R}
\\\end{aligned}\]
In the following list identify a vector having the same direction as the parametric
line \(p\).
\[ \begin{aligned}
p\colon x & = -5, \\
y & = 5t;\ t\in \mathbb{R}
\end{aligned}\]
In the following list identify a vector having the same direction as the parametric
line \(p\).
\[ \begin{aligned}
x & = 2t, \\
y & = 0;\ t\in \mathbb{R}.
\\\end{aligned}\]