Respuesta :

Answer:

D

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a (x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

y = - 1(x - 4)² + 9 ← is in vertex form

with vertex = (4, 9 )

• If a > 0 then vertex is a minimum

• If a < 0 then vertex is a maximum

Here a = - 1 < 0 , thus

vertex = (4, 9 ) and is a maximum → D

lilypadgett7
answer;
d
explanation;