Respuesta :

Answer:

vertex = (1, - 9 )

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 = - (x - 1)² - 9 ← is in vertex form

with vertex = (1, - 9 )