# Figuring out kyle numbers for matrices/

## Homework Statement

http://www.math.harvard.edu/archive/21b_spring_09/faq.html
I'm having trouble understanding this explanation, particularly this part. "The Kyle numbers are 1, 2 because adding the first to 2 times the second column gives zero. "
Sorry for this basic question but I was wondering if someone can explain this particular part.

NA

NA