Question

Which of the following is the vertex of the quadratic equation y = x^2 - 6x + 9 ?

a. (3, 0)
b. (-3, 3)
c. (4, 1)
d. (1, 4)

Answer 1

use x = -b over 2a to find the x-coordinate

Answer 2

b

Answer 3

What? Why is b the answer?

Answer 4

because it looked good

Answer 5

like a cheeseburger

Answer 6

Looking good doesn't mean right, just like when you girls say looks ain't everything.

Answer 7

looks are everything

Answer 8

Not in this case it isn't

Answer 9

lol

Answer 10

Whats the answer? Wtf

Answer 11

I gave you the formula to find the x coordinate

Answer 12

Use it....

Answer 13

yes use his formula

Answer 14

Hint: It's not b

Answer 15

lol

Answer 16

its b and a half?

Answer 17

The answer isn't b anything

Answer 18

Jasmine, you fail to properly apply my formula

Answer 19

|b|-(0,3)?

Answer 20

What the....? Where does that come from and what methods have you used?

Answer 21

i made an algorithm

Answer 22

You shouldn't have....lol

Answer 23

i put my pencil on the paper and i draw circles
and then i count the circles to see how many times i need to count through the choices and then i do -(0,3)

Answer 24

the absolute value of that choice -(0,3)

Answer 25

Your methods are questionable at the moment

Answer 26

to tell you the truth i think this is the only time it works

Answer 27

If something has only worked one time, It's probably not a valid method...

Answer 28

Especially in math

Answer 29

its valid for that one time

Answer 30

Well, for this problem you use x = the opposite of b over 2a

Answer 31

ok

Answer 32

You can either use that or graph it to find x

Answer 33

where does a and b come from

Answer 34

a = 1
b = -6

Answer 35

where is that

Answer 36

The are coefficients of the first and second terms

Answer 37

oh does that come from f(x)=x^2-6x+9

Answer 38

what do we do with the 9?

Answer 39

Yes

Answer 40

We don't do anything with the 9. It's not part of the formula

Answer 41

ok so we do b/2a
-6/2(1)=-3(1)=-3

Answer 42

x = -b/2a not b/2a

Answer 43

-b means the opposite of b.

Answer 44

oops i see a mistake of mine
-3+1=-2
but i did it wrk
it should be
3+1=4

Answer 45

not wait its multiplication
right
so 3

Answer 46

It's about time.....

Answer 47

You finally got it

Answer 48

but thats what i got doing my algorithm

Answer 49

|b|-(0,3)

Answer 50

I'd rather use -b/2a than some algorithm

Answer 51

ok

Answer 52

gj hero