$ sudo apt-get update
$ sudo apt-get install octave-linear-algebra 

octave-linear-algebra is installed in your system.

Make ensure the octave-linear-algebra package were installed using the commands given below,

$ sudo dpkg-query -l | grep octave-linear-algebra *

You will get with octave-linear-algebra package name, version, architecture and description in a table

octave-linear-algebra package basic information: