Question

Can you guys please help and check my answers for me? To see if I got them right.

Answer 1

1. What is the y-intercept of the graph of y = 3x2 6x 8?
(Points : 4)
-8

6

1

3

I think it is A for this one.

Answer 2

the y intercept is the point on the graph where x=0
replace x with 0, you get -8, I presume

Answer 3

I think this one is also A

Answer 4

the axis of symmetry formula is \(\large x=\frac{-b}{2a}\)

Answer 5

So my answer is wrong?

Answer 6

I forgot to check

Answer 7

looks good, sorry

Answer 8

Yes the answer is incorrect.

Answer 9

Umm.? Ha. now I'm confused.

Answer 10

\(b=-5\\
a=-2\\
2a=-4\\
\large \frac{-b}{2a}=\frac{--5}{-4}=\frac{-5}{4}\)

Answer 11

So I'm right.?

Answer 12

A again for this one

Answer 13

that's what I said, yeah

Answer 14

start by finding x with the same formula as the previous problem.
I got x=2. then plug it into the equation, I got 4-8-5=4-13=-9

Answer 15

correct

Answer 16

I chose that graph as the answer

Answer 17

That's what she said.

Answer 18

to do this kind of problem, find the x intercepts by setting y to 0. we then know that \(a \times b=0\) when either a or b is 0.
when a is 0: \(x+1=0\longrightarrow x=-1\)
when b is 0: \(x-4=0\longrightarrow x=4\)

Answer 19

So that's the wrong graph

Answer 20

mhm

Answer 21

my friend is sending me snapchats of himself pissing, send help

Answer 22

So its this one?

Answer 23

-1 and 4 not -1 and -4

Answer 24

You should send me some, too.

Answer 25

Okay one ew xD and two I'm confused. So would it be this one then because the others look really wrong

Answer 26

add me, bibums

Answer 27

as I understand it, it'd look something like