The graph of which function has an axis of symmetry at x = 3? f (x) = x2 3x 1 or f (x) = x2 - 3x - 3 or f (x) = x2 6x 3 or f (x) = x2 - 6x - 1

Question

Mathematics

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8 May, 19:10

The graph of which function has an axis of symmetry at x = 3? f (x) = x2 3x 1 or f (x) = x2 - 3x - 3 or f (x) = x2 6x 3 or f (x) = x2 - 6x - 1

+3

Answers (1)

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Helena Morales · Answer 1

For

ax^2+bx+c

the axis of symmetry is - b/2a

first one

-3/2=3, nope

2nd one

3/2=3? nope

3rd one

-6/2=3? nope

fourth

6/2=3? yes

answer is last one or

f (x) = x^2-6x-1