Line of symmetry of y = x^2 - 6x + 8

prepage

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How do you determine the line of symmetry.
The equation I'm trying to complete is:

y = x^2 - 6x + 8
 
Re: Line of symmetry

prepage said:
How do you determine the line of symmetry.
The equation I'm trying to complete is:

y = x2 - 6x + 8

x=-b/2a.

a=1, b=-6

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

Then plug 1/12 in for x in the equation.

(1/12)^2 - 6(1/12) +8

Find that answer.

(1/12, your answer)

the line of symmetry is 1/12.
 
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