What Is the Term for the Slope Transition Point in Calculus?

[msell2]

I have attached an image of a function that I fit to a scatter plot, and I would like to know if there is a term for the point on the function at which the slope transitions from being less than -1 to greater than -1. I have highlighted this point approximately in yellow. Thanks!http://static1.squarespace.com/static/54dfaacbe4b0a566f120550f/t/55481b19e4b03cee0385b39a/1430788890834/?format=750w

 

[Mark44]

I have attached an image of a function that I fit to a scatter plot, and I would like to know if there is a term for the point on the function at which the slope transitions from being less than -1 to greater than -1. I have highlighted this point approximately in yellow. Thanks!http://static1.squarespace.com/static/54dfaacbe4b0a566f120550f/t/55481b19e4b03cee0385b39a/1430788890834/?format=750w

There's no term describing this that I've ever heard of.

 

[leafjerky]

Nothing to my knowledge, but if there was a term, I'd check here: http://en.wikipedia.org/wiki/Exponential_function