A

9000106006

Level: 
A
In the following list identify a vector having the same direction as the line passing through the points \(A\) and \(B\). \[ A = \left [-3;-1\right ]\text{, }\qquad B = \left [-1;-2\right ] \]
\(\left (2;-1\right )\)
\(\left (-4;-3\right )\)
\(\left (1;2\right )\)
\(\left (2;1\right )\)

9000106005

Level: 
A
In the following list identify a vector having the same direction as the line passing through the points \(A\) and \(B\). \[ A = \left [2;1\right ]\text{, }\qquad B = \left [3;2\right ] \]
\(\left (1;1\right )\)
\(\left (-1;1\right )\)
\(\left (5;3\right )\)
\(\left (3;5\right )\)

9000106001

Level: 
A
In the following list identify a vector in the direction of the following parametric line. \[\begin{aligned} x =\ &1 + t, & & \\y =\ &3 + 2t;\ t\in \mathbb{R} & & \end{aligned}\]
\(\left (1;2\right )\)
\(\left (1;3\right )\)
\(\left (0;2\right )\)
\(\left (3;1\right )\)

9000106601

Level: 
A
Determine whether the following two lines are identical, parallel, intersecting or skew. \[ \begin{aligned}[t] p\colon x& = -6 - t,& \\y & = 7 + t, \\z & = -2t;\ t\in \mathbb{R} \\ \end{aligned}\qquad \qquad \begin{aligned}[t] q\colon x& = -1 - 2s, & \\y & = 2 + 2s, \\z & = 10 - 4s;\ s\in \mathbb{R} \\ \end{aligned} \]
identical lines
parallel lines, not identical
intersecting lines
skew lines

9000106002

Level: 
A
In the following list identify a vector in the direction of the following parametric line. \[\begin{aligned} x =\ &t - 1, & & \\y =\ &t - 2;\ t\in \mathbb{R}\text{.} & & \end{aligned}\]
\(\left (1;1\right )\)
\(\left (1;2\right )\)
\(\left (-1;-2\right )\)
\(\left (1;-1\right )\)