Hey I've reduced the matrix to what it's asked me to which is

1 - 1 - 1 - 9

0 - 1 - -1 - 5

0 - 0 - 0 - K+5

It's the second part of the question I don't understand, describe the behaviour when k doesn't equal -5 and when it does it equal -5 by stating that the equations are inconsistent or finding the reduced echelon matrix? Anyone shed any light on this? Thanks