Create a quadratic function, f(x), in vertex form. The a should be between 4 and –4, the h will be your birth month, and the k will be your birth day. Write your equation below.

My birthday is June 8, 1999.

How do i do dis ? ;p

Question

Create a quadratic function, f(x), in vertex form. The a should be between 4 and –4, the h will be your birth month, and the k will be your birth day. Write your equation below. 

My birthday is June 8, 1999. 

How do i do dis ? ;p

gabylovesyou · Answer

@sleepyjess

gabylovesyou · Answer

@chosenmatt

chosenmatt · Answer

gimme a sec ;)

gabylovesyou · Answer

ok thank you ^-^

chosenmatt · Answer

u know....i rather get someone else too help u because i don't wanna give u false information because im not 100% sure sorry :(

gabylovesyou · Answer

its okay.. who do you think can help me ? ;p

chosenmatt · Answer

@perl @adrynicoleb @dan815 @Trinity_haha @inowalst @iGreen

chosenmatt · Answer

@js7474 please help :)

chosenmatt · Answer

@TheSmartOne please help

anonymous · Answer

Sorry hun i have no clue O.o

thesmartone · Answer

Vertex form is

$\sf a(x-h)^2+k$

chosenmatt · Answer

yay i got someone too help u :)

thesmartone · Answer

The 'a' should be kept 1 as it is way easier than choosing another value between -4 and 4.

thesmartone · Answer

'k' is 8 which is the day in your birthday.

thesmartone · Answer

And 'h' is 6 because June is the 6th month.

gabylovesyou · Answer

@chosenmatt Thank you so much !

gabylovesyou · Answer

@TheSmartOne sooo it would be f(x) = 1(x - 6)^2 + 8

gabylovesyou · Answer

right  ?

thesmartone · Answer

Correct :)

gabylovesyou · Answer

ok... how do i turn that equation in standard form  ?

thesmartone · Answer

Standard Form is

$\sf Ax^2+By=C$

thesmartone · Answer

So expand $\sf (x-6)^2$ and combine it with the 8 and you can also think of $\sf f(x) = y$ and get it into that format above.

chosenmatt · Answer

:-)

gabylovesyou · Answer

(x - 6)(x - 6) ?

gabylovesyou · Answer

I get x^2 - 12x + 44

gabylovesyou · Answer

@TheSmartOne

gabylovesyou · Answer

so y = x^2 - 12x + 44

thesmartone · Answer

Now move around the terms so it is in the format of $\sf Ax^2+By=C$

gabylovesyou · Answer

umm.. x^2 + 44 - 12x = y ?

thesmartone · Answer

Correct. Ignore what I was saying lol. Good job :)

What is the next part?

gabylovesyou · Answer

so it is like that ? ok lol ;p how do i graph it now.

thesmartone · Answer

https://www.desmos.com/calculator/ju5tzfaf2d

thesmartone · Answer

@iambatman explains it nicely over here too: http://openstudy.com/study#/updates/53af97e9e4b02c45b016004b

gabylovesyou · Answer

Thank you so much :D

thesmartone · Answer

Anytime :)