F(x) = Y = -X^2 + 9.
h = Xv = -b/2a = 0/-2 = 0.
k = Yv = 0^2 + 9 = 9.
V(h,k) = (0,9).
The max. value is at the vertex and is equal to 9.
find the vertex, line of symmetry, and minimum or maxium values of the quadratic equation
f(x)=9-x^2
2 answers
The line of symmetry = h = 0.