Which function has an axis of symmetry of x = - 2? f (x) = (x - 1) 2 2 f (x) = (x 1) 2 - 2 f (x) = (x - 2) 2 - 1 f (x) = (x 2) 2 - 1

Question

Mathematics

Shaw

Today, 05:43

Which function has an axis of symmetry of x = - 2? f (x) = (x - 1) 2 2 f (x) = (x 1) 2 - 2 f (x) = (x - 2) 2 - 1 f (x) = (x 2) 2 - 1

+3

Answers (1)

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Isaiah Faulkner · Answer 1

Ok so the axis of symmery is the x value of the vertex

remember vertex form

f (x) = a (x-h) ^2+k

h is the x value

so we want

xvalue=-2=h

f (x) = a (x - (-2)) ^2+k

or

f (x) = a (x+2) ^2+k

we see that the last one is the answer

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