

The 7b9 chord and arpeggio with the 6th string root.
The 7b9 Chord
The 7b9 chord has the 1, 3, 5, b7, and b9 intervals. The 6th string isn't necessarily played but you still associate this chord with the root on the 6th string. The numbers in the diagram below represents the fingering.
The 7b9 Arpeggio
The dominant 7b9 arpeggio, like the dominant 7b9 chord, has the 1, 3, 5, b7, and b9 intervals. The numbers in the diagram below represents the fingering.