How do you find the range of the quadratic function f(x) = -7(x - 2)^2 - 9?
1 Answer
Apr 26, 2015
When x = 2 --> f(x) is Max --> f(x) = -9.
The coefficient a = -7, then the parabola opens downward.
The range of f(x) is the interval (- infinity, -9).
