SOLUTION: Let f (x) = x^2− 4x + 9. (a) find the vertex (b) State the range of the function. (c) On what interval is the function increasing?

Algebra ->  Average -> SOLUTION: Let f (x) = x^2− 4x + 9. (a) find the vertex (b) State the range of the function. (c) On what interval is the function increasing?       Log On


   

Question 1116510: Let f (x) = x^2− 4x + 9.
(a) find the vertex
(b) State the range of the function.
(c) On what interval is the function increasing?
Answer by josgarithmetic(39615) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2-4x%2B4%2B9-4
x%5E2-4x%2B4%2B5
%28x-2%29%5E2%2B5

(a) Vertex, (2,5)
(b) Range, f%28x%29%3E=5
(c) Increasing for x%3E=2