SOLUTION: Find the maximum or minimum value of the function defined by f(x)= -x squared -6x-8.

Algebra ->  Equations -> SOLUTION: Find the maximum or minimum value of the function defined by f(x)= -x squared -6x-8.      Log On


   

Question 410111: Find the maximum or minimum value of the function defined by f(x)= -x squared -6x-8.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find the maximum or minimum value of the function
defined by f(x)= -x^2-6x-8.
---
Since x^2 has a negative coefficient,
the parabola opens down.
---
Max occurs when x = -b/2a = 6/(-2) = -3
---
Max value is f(-3) = -(-3)^2-6(-3)-8 = -9+18-8 = 1
----
graph%28400%2C300%2C-10%2C10%2C-15%2C5%2C-x%5E2-6x-8%29
========================
Cheers,
Stan H.
============