Quiz was pretty simple
Here we go:
Is the following operator linear or not? (with steps of course!) $$ L(x) = (x_1, -5x_2) $$
That is it!
As a bonus, the other section got almost the exact same question.
$$ L(x) = (x_1, 5x_2) $$
Solutions
This is left as an exercise to the reader ;)
Last words
good luck :D