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12 August, 04:27

What is the vertex of the quadratic function below? Y=x^2-8x+1 A. (-8,129) B. (8,1) C. (4,-15) D. (-4,15)

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  1. 12 August, 06:48
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    The correct answer is C. (4, - 15)

    Step-by-step explanation:

    In order to find any vertex, start by finding the x value. We can do this by using - b/2a in which a is the coefficient of x^2 and b is the coefficient of x.

    -b/2a

    - (-8) / 2 (1)

    8/2

    4

    Now we know the value of x is 4. This gives us the only option being C
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