How do you do this?

Question

How can you graph this?
y = [x]
(greatest integer function, do not connect the steps)
I really don't know how to graph this. Can you give me an example?
Thank you so much. I appreciated it.

Answer 1

We did this graph in PreCal this year.
Scanned for you.

http://img464.imageshack.us/img464/5540/77686609sk0.jpg

Btw, you meant y = [|x|]

Answer 2

On [-1, 0), y = -1; on [0, 1), y = 0; on [1, 2), y = 1; on [2, 3), y = 2; and so on.
So the graph is a sequence of flat line segments that are closed at the left and open at the right, like this:
(#)-------( )
where (#) represents a filled in circle and ( ) represents an empty circle. It should look like a staircase suspended in midair.

Answer 3

for x>0, y=xand the graph of this part is the bisector of the I quadrant and lies in this quadrant..
For x<0, y=-x and the graph of this part is the bisector of theII quadrant and lis in this quadrant

Answer 4

I think above all these people are right. Just follow them.