posted by GGIFT .
Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function.
f(x) = -2x^2 + 2x + 9
x coordinate is
y coordinate is
the equation of the line of symmetry is x =
Maximum/minimum of f(x) is
the value, f (1half) = 19 over 2 (fraction) is ?
min or max ???