Question 1001369
The coefficient on the leading term is negative, so makes the parabola convex upward, concave downward, meaning vertex is a maximum.


Complete the Square and transform into standard form, and then directly read the vertex coordinates from the standard form equation.


See this to learn how: <a href="http://www.algebra.com/my/Completing-the-Square-to-Solve-General-Quadratic-Equation.lesson?content_action=show_dev">how to solve and includes how to complete the square, quadratic equation</a>