Question

Fill in the missing term so that the quadratic equation has a graph that opens up, with a vertex of
(– 2, – 16), and x intercepts at x = -6 and x = 2.

y = x2 + 4x − ___

Answer 1

Well you could make this real complex by doing the vertex since you have the x int, thats just what the factored form of the euquation is so just have x and subtract the two numbers form it

Answer 2

In other words

Answer 3

\[(x-(-6))*(x-2) \]

Answer 4

@doulikepiecauseidont ahhh :O

Answer 5

\[(x+6)*(x-2)=x^2+4x-24\]

Answer 6

@doulikepiecauseidont lol this is a pretest so I didn't really study for this, it's something that I am not suppose to know yet :3

Answer 7

24

Answer 8

thanks dou! :D

Answer 9

LoL Is it pre-calc? causr that's what I learned there

Answer 10

@doulikepiecauseidont its algebra :D

Answer 11

oh oh dou I think 24 is wrong :(

Answer 12

the vertex opens up at -28 and -2 :(

Answer 13

oooh tru that works too, but i was totally about to do that whole vertex crap

Answer 14

lol its okay XD

Answer 15

and thats what we must do , great.
do yoyu know how to evaluate a vertex?

Answer 16

@doulikepiecauseidont I think the answer might be 12 :3

Answer 17

it is

Answer 18

@doulikepiecauseidont u sure? XD

Answer 19

YES. I even plugged it in, the reason i got the other answer is the fact that numbers have more than one set of factors

Answer 20

yep it is :D I plugged it in too XD

Answer 21

looks like we both teached each other somethin ^-^

Answer 22

I'm saying you can;t just take the x ints to get the function, cause they added theyw wanted the vertexx here

Answer 23

and HUSH

Answer 24

@doulikepiecauseidont yes sir :3 thanks for the help :D

Answer 25

I like how you no fan me its good

Answer 26

@doulikepiecauseidont sorry, I don't check my notifications much T_T