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What are the coordinates of the vertex of the function f(x) = x2 − 12x + 5?

(6, 31)
(−6, 31)
(6, −31)
(−6, −31)

1 Answer

5 votes

Answer:

This means that the coordinates of the vertex of the function are
(6,-31)

Explanation:

To find the x-coordinate of the vertex of a quadratic function, we can use the formula:


x=(-b)/(2a)

We are given the function
f(x)=x^2-12x+5

In this function,
a=1 and
b=-12

Now we can input these values into our formula


x=(-(-12))/(2(1)) \\\\x=(12)/(2) \\\\x=6

This means that the x-value of the vertex is located at
x=6. To find the other half of the coordinate pair, we can now plug
x=6 into the given function


f(6)=(6)^2-12(6)+5\\\\f(6)=36-72+5\\\\f(6)=41-72\\\\f(6)=-31

This means that the coordinates of the vertex of the function are
(6,-31)

User Cthrash
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