What are the coordinates of the vertex of the graph of the function y = –x² + 6x –11?

Question

anonymous · Answer

(3, –2)
(3, 16)
(–3, –29)
(–3, –20)

anonymous · Answer

well i dont know for sure but here my opinion answer (-3,-29)

anonymous · Answer

im 50% sure

anonymous · Answer

dont take my word completely

mani_jha · Answer

Bring the right hand side to the form of a square(a^2 +2ab + b^2). For that you will need to multiply with equation with -1 to remove the - sign before x^2. Do that first, add 9 to both sides. Make it a square.
The vertex of a parabola:
$$(x-a)^{2}=k(y-b)$$, is (a,b). Do, I need to show the steps?

anonymous · Answer

|dw:1330711564373:dw|the correct answer is 3,-2