# Quiz: Coordinates

### Question 1

1 point

Write the coordinates of the vector $\stackrel{\mathit{⇀}}{\mathit{x}}\mathit{}\phantom{\rule{0pt}{0ex}}$ with respect to the basis $\mathit{B}\phantom{\rule{0pt}{0ex}}$, where

$\stackrel{\mathit{⇀}}{\mathit{x}}=\left[\begin{array}{c}5\\ -18\end{array}\right]\phantom{\rule{0pt}{0ex}}$, and $\mathit{B}=\left\{\phantom{\rule{5px}{0ex}}\left[\begin{array}{c}1\\ 2\end{array}\right],\left[\begin{array}{c}5\\ -4\end{array}\right]\phantom{\rule{5px}{0ex}}\right\}\phantom{\rule{0pt}{0ex}}$.

 ${\left[\stackrel{\mathit{⇀}}{\mathit{x}}\right]}_{\mathit{B}}=\phantom{\rule{0pt}{0ex}}$