SOLUTION: Letf(x)=x2 +8x+23. (a) Find the vertex. (b) State the range of the function. (c) On what interval is the function increasing?

Algebra ->  Functions -> SOLUTION: Letf(x)=x2 +8x+23. (a) Find the vertex. (b) State the range of the function. (c) On what interval is the function increasing?      Log On


   

Question 1023375: Letf(x)=x2 +8x+23.
(a) Find the vertex.
(b) State the range of the function.
(c) On what interval is the function increasing?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
This video lesson should be extremely helpful: changing quadratic function from general form to standard form

You can read the vertex directly from the standard form of the function. The vertex ands sign of the coefficient on the leading term will tell you about the range for the function.