Answer:
Option A.
![g(x)= (1)/(2)(x-8)^2-8](https://img.qammunity.org/2021/formulas/mathematics/middle-school/gg8bgksmpw8vsbct3i3c3ro67fx8hf64oe.png)
Explanation:
The complete question is
The function g is given in three equivalent forms.
Which form most quickly reveals the vertex?
A)g(x)= 1/2(x-8)^2-8
B)g(x)= 1/2(x-12)(x-4)
C)g(x)= 1/2x^2-8x+24
we know that
The equation of a quadratic function in vertex form is equal to
![y=a(x-h)^2+k](https://img.qammunity.org/2021/formulas/mathematics/middle-school/8p1sxsgegitwlyo0h3hri0gwrs8yt9xyxk.png)
where
a is the leading coefficient
(h,k) is the vertex of the function
In this problem, the option A is the equation of the function in vertex form
we have
![g(x)= (1)/(2)(x-8)^2-8](https://img.qammunity.org/2021/formulas/mathematics/middle-school/gg8bgksmpw8vsbct3i3c3ro67fx8hf64oe.png)
where the vertex is the point (8,-8)
therefore
Option A