find the vertex, line of symmetry,and the maximum or minimum value of f(x). Choose the graph that represents

f(x)=1/4(x+9)^2+7

maybe you mean

f(x)=(1/4)(x+9)^2+7
(x+9)^2 = 4(y-7)

vertex at (-9,7)
symmetry around x = -9
minimum of y = 7