Algebra II (I believe; can't find it in my textbook)

Graph the following functions:

a. y = [x - 2]

Except the brackets aren't *just *brackets. They're rather funny-looking brackets; they look something like this:

Instead of [], they look like

╓ ╖

╙ ╜

The brackets aren't actually separated by their tops and bottoms being on different lines, but I couldn't find any alt codes/symbols that matched the exact appearance, even in Wikipedia's Table of Mathematical Symbols. How my math teacher got it on this paper is mystifying indeed... I couldn't find it in my Algebra II book, and so I've concluded that I'm completely lost.

Thanks in advance!

(Originally posted in the Pre-Algebra and Algebra section)