Answer:
(5, 11 )
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
Given
y - 11 = - (x - 5) ← add 11 to both sides
y = - (x - 5)² + 11 ← in vertex form
with vertex = (5, 11 )