Question

Help with my math quiz please?

Answer 1

only A

Answer 2

Thanks @Aditya9826042721

Help me with the second?

Answer 3

Helping on "quizzes" or "tests" is considered CHEATING.
so if you would just not mention that it's a quiz or test *cough*
then I might be able to help,

also, please only post one question per question post :)

oh and
Please try to avoid giving such direct answers, it is against OpenStudy's code of conduct
http://openstudy.com/code-of-conduct
This site has a policy for "Give Help, Not Answers"
violations of such policies could potentially result in an account suspension or ban.

Answer 4

for 1st ans is D

Answer 5

would u dont want reason ?

Answer 6

Then could you also explain the other two for me?

Answer 7

for first function is defined as for one x there is only one and one value of y therefore A is ans
since for each x diffrent y .

Answer 8

yup

Answer 9

Oh and @jigglypuff314 thanks for the tip, I'll ask for step by step help next time. Or starting now :)

Answer 10

Oh I get it so the coordinates cannot repeat?

Answer 11

u memories
that
for
x there is only one y

Answer 12

yes since graph cut x axis at 3 position

Answer 13

now would understand modulus function and how to open them ?

Answer 14

I don't get what your asking

Answer 15

for ease just put in equation x=-3

Answer 16

no that is wrong correct it

Answer 17

Wait why is it wrong?

Answer 18

and i am alway comfortable

Answer 19

now i will tell that u put x=-3
right

Answer 20

we do it step by step

Answer 21

first |-6+1|

Answer 22

here we get |-5| +5 right

Answer 23

yes

Answer 24

here the term in |----| cant open directly

Answer 25

since it is not a bracket

Answer 26

also what do you mean by 'can't open directly'?

Answer 27

i am here to correct u and tell now
ans is 10 i tel u why ?

Answer 28

Yes, please explain....I just don't understand why it wasn't zero

Answer 29

the term in side |...| is not open directly since
|...| called modulus function and any -ve term in it when take out from it written as positive
i.e. |-3| =3
|-789|=789

Answer 30

so |-5|+5 = 5+5=10

Answer 31

now dont go any where i will tell u about modulus
something more....

Answer 32

f(-3) means plug in -3 for x

for f(x) = |2x + 1| +5
so become | 2(-3) + 1 | +5
multiply | -6 + 1 | + 5
add like terms | -5 | + 5

what aditya was trying to get at was anything in the | | bars comes out positive
so |-5| + 5 becomes 5 + 5 = 10

Answer 33

and also get correct that that is |...|
not (...) or {...}

Answer 34

they're called absolute values :)

Answer 35

Is it a college level math term? Just wondering cause I don't want to use a term that wasn;t even in my math leson

Answer 36

Thank you both!

Answer 37

not so thought man very easy now just wait i will tell u

Answer 38

Can I ask my next question? or at least type it

Answer 39

ya why not i will get on that next time.

Answer 40

are u there or not

Answer 41

Yes I am here

Answer 42

I have you best answer since you helped me more than enough

Answer 43

is that a big one....:)

Answer 44

Now I remember doing this in the 9th grade but as two years have passed (I'm in the 11th grade) I completely forgot what to do...

Answer 45

Sept by step to refresh my memory ?

Answer 46

slope-intercept form: y = mx + b
when m = slope and b = y-intercept

Answer 47

now use this concept
for slope m and point (x1,y1)
line has equation
y-y1=m(x-x1)

Answer 48

that's point slope form aditya

Answer 49

if u cant get it than again tell me

Answer 50

i am in 12 th

Answer 51

correct! :)

Answer 52

really?

Answer 53

yes that is correct

Answer 54

put first x=0 and find y and than
put y=0 and find x
plot that and u get the answer

Answer 55

So for this, does the line have to hit the two's only? Meaning graph 2 isn't the answer?

Answer 56

So D?

Answer 57

yes! :D

Answer 58

ya u get that

Answer 59

Would it be A

Answer 60

not think so

Answer 61

I did what you told me in the last step in reverse

Answer 62

slope / way means x is postive
slope \ way means x is negative

Answer 63

So then how do I solve it

Answer 64

ya that is also a method

Answer 65

it slopes /
so x is positive
so it's like y = x + something

Answer 66

yeah B :P I was too lazy to draw XD

Answer 67

ya B is right

Answer 68

Do you know what symbol I'm talking about?

Answer 69

no idea....
y = number is horizontal line
x = number is vertical line

Answer 70

it has slope 90 degree
here x=constant
now identify that =+or - ve

Answer 71

Would it be D then, y = -4

Answer 72

not it is not

Answer 73

So then B? I know it can't be C.

Answer 74

C has an x in it

Answer 75

I think it's x = -4 without any weird symbols XD

Answer 76

yes it has to

Answer 77

So which is it? B or D

Answer 78

I'm confused

Answer 79

b since x=constant and -ve

Answer 80

I vote for B !!!

Answer 81

i also vote B

Answer 82

Thanks Guys,

I'm gonna go ahead and try to answer stuff myself now. If I need any help can I still ask or will you be offline?

Answer 83

I'll be around :P

Answer 84

try ur best

Answer 85

is that a question from statistic

Answer 86

(looks up on google)
oh line of best fit

Answer 87

there should be an equal amount of dots above and below the line

Answer 88

ya it is a question of stats

Answer 89

ok thanks

Answer 90

is that over

Answer 91

I have another question

Answer 92

sure

Answer 93

y = (x - h)^2 + k
where (h, k) is the vertex

Answer 94

The y intercept look like it's -3 but there is no -3

Answer 95

it is a quadratic cuve

Answer 96

vertex is (-1, -4)
plug in h = -1
and k = -4
into y = (x - h)^2 + k

so y = (x - (-1)^2 + (-2)

Answer 97

Would it be A then? Or b?

Answer 98

A would be correct :)