SOLUTION: I don't understand this question: y=-11x2+bx+c has vertex (−2,5) a=11 b=? c=?

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Question 1176580: I don't understand this question:
y=-11x2+bx+c has vertex (−2,5)
a=11 b=? c=?



Answer by ikleyn(52752) About Me  (Show Source):
You can put this solution on YOUR website!
.

It means that


    y = -11%2A%28x-%28-2%29%29%5E2 + 5,


or, which is the same,


    y = %28-11%29%2A%28x%2B2%29%5E2 + 5.



At this point, you need to write it as a trinomial and compare coefficients.


In this way, you will determine the unknown coefficients  "b" and "c".


Is everything clear to you in my explanation ?