Question: What is the vertex of the parabola represented by the equation y = x^2 - 6x + 8?

Options:

1. (3, -1)
2. (3, -4)
3. (6, 8)
4. (0, 8)

Correct Answer: (3, -1)

Solution:

The vertex is at x = -b/(2a) = 3. Plugging in gives y = -1.