Which statement is true about the extreme value of the given quadratic equation? A. The equation has a maximum value with a y-coordinate of -21. B. The equation has a maximum value with a y-coordinate of -27. C. The equation has a minimum value with a y-coordinate of -21. D. The equation has a minimum value with a y-coordinate of -27.

A. The equation has a maximum value with a y-coordinate of -21.

Step-by-step explanation:

From the given equation:

This parabola is vertical and is goes downward via the negative path

Where the vertex represents the maximum value;

Using completing the square method;

To perfect square:

The vertex point is (2, -21)

Hence ; the equation has a maximum value with a y-coordinate of -21.

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step-by-step explanation: