Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point.
f(x) = x2 + 2x - 9
The x value of the vertex is given by -b/2a
= -2/2(1) = -1
f(x) = y = (-1)^2 + 2(-1) - 9
= 1 - 2 - 9 = -10
The function is a parabola, so
it has a MINIMUM at (-1, - 9)
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