Please turn on Javascript
Your browser either doesn't support Javascript, or you've turned it off.
To use Mentimeter, please make sure to turn Javascript on.
How do I enable Javascript?
What is a directional vector for the line through $$\begin{pmatrix} 1\\2\\3\end{pmatrix} \text{ and }\begin{pmatrix} 4\\5\\6\end{pmatrix}?$$ - Mentimeter