Question

What is the vertex of the graph of the function below?

y = x^2- 8x + 12

Answer 1

can you complete the square in x...?

\[y = (x^2 - 8x + ? ) - ? + 12\]

by finding the value of ?

the alternative is to find the line of symmetry

\[x = \frac{-b}{2a}\]

in the question b = -8 and a = 1

when you get the line of symmetry... substitute it into the equation to get the vertex.

the vertex will be (x, f(x))

hope it helps

Answer 2

Figured it out, thank you!