Question

Find the equation of the axis of symmetry: f(x)=3(x-9)^2+2 Answers: A. x=9 B. x=-2 C. x=2 D. x=-9 and E. None of the Above

Answer 1

Hint:

The axis of symmetry of \[\Large y = a(x-h)^2 + k\] is \[\Large x = h\]

Answer 2

i don't know what to do with that hint?

Answer 3

Example:

The equation \[\Large y = 5(x-2)^2 + 14\] is in the form \[\Large y = a(x-h)^2 + k\]

So we see that a = 5, h = 2 and k = 14

So the axis of symmetry of \[\Large y = 5(x-2)^2 + 14\] is \[\Large x = 2\]

Answer 4

okay i got it now. Thank you.

Answer 5

you're welcome