Question 62168
Find the vertex, axis of symmetry, maximum value or minimum value, x and y intercepts. 
f(x)=-3/11(x-7)2-9
Rewrite as:
y+9=-(3/11)(x-7)^2
Vertex is (7,-9)
Axis of symmetry is x=7
Maximum is at the vertex
Let x=0 then y=(-3/11)(-7)-9=-7.0909...
That is the y-intercept.
Let y=0 then (x-7)=sqrt(negative number) so 
there is no x-intercept.
Cheers,
Stan H.