Are my answers right about these graph points? (derivs)

[Queenisabella87]

Hey , it says forum attachment quota reached, so I used image shack.

Are my answers right ? This is a graph with questions just based on looking, no computing.

Thanks =)

http://img440.imageshack.us/i/calc1w.jpg/

 

[mmm4444bot]

This is not the graph of a function because it fails the vertical line test.

[attachment=0:2qev2lx4]screwup.JPG[/attachment:2qev2lx4]

The first few exercises look correct.

As for the rest, here are two questions for you:

What is the slope at point H ?

What is the significance of the second derivative's sign, in those exercises ?

 

[lookagain]

Re:

This is not the graph of a function because it fails the vertical line test.

[attachment=0:1uecy9ai]screwup.JPG[/attachment:1uecy9ai]

mmm4444bot,

this looks to be hand-drawn. I think point \(\displaystyle M\) was intended to be a point of inflection
with a vertical tangent line there, despite the graph looking to be "bulging" to the side(s)
near point \(\displaystyle M.\)