Analytic geometry in a plane

2010014603

Level: 
A
In the following list identify a line which is perpendicular to the line \( 2x +3y -7= 0\).
\(\begin{aligned}[t] x& = 2t, & \\y & = -11+3t;\ t\in \mathbb{R} \\ \end{aligned}\)
\(\begin{aligned}[t] x& = 1+3t, & \\y & = 11 - 2t;\ t\in \mathbb{R} \\ \end{aligned}\)
\(\begin{aligned}[t] x& = 2+t, & \\y & = 3 - t;\ t\in \mathbb{R} \\ \end{aligned}\)
\(\begin{aligned}[t] x& = 2t+7, & \\y & = - 3t+1;\ t\in \mathbb{R} \\ \end{aligned}\)

9000106001

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