Question

Could someone help me solve this?

Answer 1

you know the vertex form of quadratic function ?

Answer 2

y = a(x - h)^2 + k
I plugged in (h,k) (the vertex) and then the point to get a, and got -1 as my answer for a, but the book says I'm wrong and should've gotten -1/8 for A

Answer 3

Hello.

Answer 4

-3 = a (5-3)^2 + 1
you got this equation ?

Hi :)

Answer 5

yup! That's what I got

Answer 6

then 'a' must be -1

Answer 7

so I put y = -1(x - 3)^2 + 1 as the answer

Answer 8

which is correct :)

Answer 9

it should be!

Answer 10

It should be correct I mean xD

Answer 11

they substituted incorrectly
it should be (5-3)^2
they took
(5-1)

Answer 12

So the book is wrong? O:

Answer 13

yes, it is incorrect

Answer 14

our calculation and equation are correct.

Answer 15

whoo!:DD That's awesome:3 THanks Hartnn!

Answer 16

welcome ^_^