You can put this solution on YOUR website! What is the vertex of the graph for the equation y=|2x-4|-9?
------------
The least value |2x-4| can take is zero.
When does that happen?
It happens when 2x-4=0 or x=2
And when x=2, y=0-9=-9
------------
That is the vertex: (2,-9)
Cheers,
Stan H.