Find the Coordinates of the Vertex for the Parabola Defined $$f ( x ) = - x ^ { 2 } + 8 x - 4$$

question 39

Multiple Choice

Find the coordinates of the vertex for the parabola defined by the given quadratic function.
- $$f ( x ) = - x ^ { 2 } + 8 x - 4$$

• A) \(( 4,12 )\)
• B) \(( 8 , - 4 )\)
• C) \(( - 4 , - 20 )\)
• D) \(( - 4 , - 52 )\)

---

Definitions:

Confidence Interval

A range of numerical figures, deduced from the statistics of a sample, presumed to grasp the value of an indefinable population characteristic.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how much the individual values differ from the mean.

True Mean Yields

The actual average outcome or result produced over a particular period or through a series of processes.

Confidence Intervals

Statistical ranges, with a given probability, that are believed to contain the true value of an unknown population parameter.