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

Kylie Pitts

3 January, 15:59

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

+4

Answers (1)

Know the Answer?

Katrina Durham · 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