Question 241543
f(x) = 16 – x^2
f(x)=-x^2+16
{{{ graph( 300, 200, -6, 5, -10, 20, -x^2 +16) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 20, -x^2 +16). 
Vertex(y=16).
Intercepts(x=+-4)
Max. y value=16