Question 795428
<pre>
The matrix

[1 0 0 | 0]
[0 1 1 | 0]
[0 0 0 | 0]

means

1x + 0y + 0z = 0
0x + 1y + 1z = 0
0x + 0y + 0z = 0

or

           x = 0
       y + z = 0

or

           x = 0
           y = -z

So the solution in terms of z is:

     (x,y,z) = (0,-z,z)

Edwin</pre>