Please help ASAP | Mathematics | Page 1

feral pilot Oct 12, 2022, 2:38 PM

#

How much theory do u know

final cedar Oct 12, 2022, 2:38 PM

#

Little to none

#

I wasnt at school when we learned this

feral pilot Oct 12, 2022, 2:38 PM

#

I tell u theory u try to solve if you stuck I help

final cedar Oct 12, 2022, 2:38 PM

#

sounds great

feral pilot Oct 12, 2022, 2:40 PM

#

For the first problem the order pairs denote a mapping of elements from one set to another
The domain of the relationship is the left part of each order pair taken as a set

#

So what would be the domain

final cedar Oct 12, 2022, 2:40 PM

#

2?

#

sorry

#

No

#

[1,2)

#

is that correct?

feral pilot Oct 12, 2022, 2:41 PM

#

https://media.discordapp.net/attachments/1029764316070694982/1029764316712423534/IMG_1311.jpg

#

For each (x,y) take x

#

And don't count repetition

feral pilot Oct 12, 2022, 2:42 PM

#

final cedar is that correct?

Tell me once more

final cedar Oct 12, 2022, 2:42 PM

#

(1,2)

feral pilot Oct 12, 2022, 2:42 PM

#

0 is also there

#

Also m

#

So {1,2,0,m}

#

Got it ?@final cedar

final cedar Oct 12, 2022, 2:43 PM

#

Yea thanks

feral pilot Oct 12, 2022, 2:43 PM

#

For the range you do the same thing but this time for each (x,y) in S you take y and put it in a set

final cedar Oct 12, 2022, 2:43 PM

#

so would range be (1,0,m)?

feral pilot Oct 12, 2022, 2:44 PM

#

n too

final cedar Oct 12, 2022, 2:44 PM

#

Oh yea

feral pilot Oct 12, 2022, 2:44 PM

#

1 m 2 n

#

You take the right ones in each duplet

final cedar Oct 12, 2022, 2:44 PM

#

Thank you, you’re a life saver

#

For this one

#

Could you help?

feral pilot Oct 12, 2022, 2:45 PM

#

Okay so for the second one the domain of the function is for which values of the x axis it's defined

feral pilot Oct 12, 2022, 2:46 PM

#

feral pilot Okay so for the second one the domain of the function is for which values of the...

.

final cedar Oct 12, 2022, 2:46 PM

#

The domain would be all reals

#

all real numbers

#

the range tho I’m not sure

feral pilot Oct 12, 2022, 2:46 PM

#

So look at the graph and for which values on the x axis does there exist a point on the curve corresponding to it

feral pilot Oct 12, 2022, 2:46 PM

#

final cedar all real numbers

Yep 👍

feral pilot Oct 12, 2022, 2:47 PM

#

final cedar the range tho I’m not sure

The range is all the y values that are obtained

#

What values of the y axis are there as a corresponding point on the curve

final cedar Oct 12, 2022, 2:47 PM

#

In that case it would be infinite tho?

feral pilot Oct 12, 2022, 2:48 PM

#

Nono

#

We don't get certain y values

#

Because look at your curve

final cedar Oct 12, 2022, 2:48 PM

#

yea

feral pilot Oct 12, 2022, 2:48 PM

#

Is there anything below the said vertex

final cedar Oct 12, 2022, 2:48 PM

#

nope

feral pilot Oct 12, 2022, 2:48 PM

#

So ur range is all the values above the y value of the vertex with it being included

#

So range is?

final cedar Oct 12, 2022, 2:49 PM

#

I’m still confused

feral pilot Oct 12, 2022, 2:50 PM

#

Above the vertex all the points from the y axis if you draw a horizontal line will it intersect the curve?

final cedar Oct 12, 2022, 2:50 PM

#

Yea

#

So (-4,-3,-2,-1….)

feral pilot Oct 12, 2022, 2:50 PM

#

But our numbers here are real numbers

#

So all real numbers greater than -4

#

Are in the range

final cedar Oct 12, 2022, 2:51 PM

#

Y>-4

feral pilot Oct 12, 2022, 2:51 PM

#

Yea

#

Could you post a better pic of third one

#

From close up

final cedar Oct 12, 2022, 2:52 PM

#

It said it was wrong

#

So I have to do a different one

feral pilot Oct 12, 2022, 2:52 PM

#

Which one?

final cedar Oct 12, 2022, 2:52 PM

#

number 2

feral pilot Oct 12, 2022, 2:53 PM

#

Hmm?

#

How is the input taken from you

final cedar Oct 12, 2022, 2:53 PM

#

feral pilot Oct 12, 2022, 2:54 PM

#

I don't see what was wrong with what we obtained in the previous problem as an answer

final cedar Oct 12, 2022, 2:55 PM

#

Yea

#

It said it was wrong

#

the domain was correct

#

The range was not

#

I tried to solve that on my own that’s why it says both were wrong

feral pilot Oct 12, 2022, 2:56 PM

#

Did u input y>=-4?

final cedar Oct 12, 2022, 2:56 PM

#

Yep

feral pilot Oct 12, 2022, 2:56 PM

#

And not just y>-4

#

Anyways

final cedar Oct 12, 2022, 2:57 PM

#

would the range for this one be an empty set?

feral pilot Oct 12, 2022, 2:57 PM

#

final cedar

For this problem it's y <=2
X is all reals

feral pilot Oct 12, 2022, 2:57 PM

#

final cedar would the range for this one be an empty set?

But why

final cedar Oct 12, 2022, 2:57 PM

#

feral pilot For this problem it's y <=2 X is all reals

I tried that and it said it was wrong

#

That was my exact thinking

feral pilot Oct 12, 2022, 2:57 PM

#

What 💀

final cedar Oct 12, 2022, 2:58 PM

#

Seriously

#

I did. that exact thing

feral pilot Oct 12, 2022, 2:58 PM

#

Then I uh dunno man

final cedar Oct 12, 2022, 2:58 PM

#

okay no wait

#

It was right

#

I dunno why it worked this time☠️

feral pilot Oct 12, 2022, 2:59 PM

#

💀

final cedar Oct 12, 2022, 3:00 PM

#

feral pilot Oct 12, 2022, 3:00 PM

#

Aight

#

So for domain u choose number of minutes

#

And range u choose amount of water

#

Now tell me what should the range and domain u think should be

final cedar Oct 12, 2022, 3:02 PM

#

#

That’s the options for both

#

For domain it should be set of all number 0-70

feral pilot Oct 12, 2022, 3:03 PM

#

Which one do u think is the one

#

Yep

final cedar Oct 12, 2022, 3:03 PM

#

And range it should be 0,1,2,3….500

#

Or no

#

Sorry

#

25,50,75,100….

feral pilot Oct 12, 2022, 3:03 PM

#

Range is also all real numbers less than....

final cedar Oct 12, 2022, 3:04 PM

#

oh really?

feral pilot Oct 12, 2022, 3:04 PM

#

Wait there's no option like that

#

Nono

#

Wait

final cedar Oct 12, 2022, 3:04 PM

#

oh I got it

#

it’s all real numbers 500-2250

feral pilot Oct 12, 2022, 3:04 PM

#

Yep

final cedar Oct 12, 2022, 3:04 PM

#

#

I think I got this one

feral pilot Oct 12, 2022, 3:05 PM

#

Okay 🔥👍

final cedar Oct 12, 2022, 3:05 PM

#

Domain is 0>=x

feral pilot Oct 12, 2022, 3:06 PM

#

x>=0

#

No wait

#

X>=0 and x<=140

final cedar Oct 12, 2022, 3:06 PM

#

And range is 450,600,750

feral pilot Oct 12, 2022, 3:07 PM

#

Why?

#

Range is between 300 and

#

....

final cedar Oct 12, 2022, 3:07 PM

#

wait

#

what

feral pilot Oct 12, 2022, 3:07 PM

#

Hmm?

final cedar Oct 12, 2022, 3:08 PM

#

So what’s the range

feral pilot Oct 12, 2022, 3:08 PM

#

What values of y does the curve achieve

final cedar Oct 12, 2022, 3:09 PM

#

450,600,750,900,1050,1200,1350

feral pilot Oct 12, 2022, 3:09 PM

#

Buts it's continuous

#

So real numbers..?

final cedar Oct 12, 2022, 3:09 PM

#

Both answers are incorrect

feral pilot Oct 12, 2022, 3:10 PM

#

Range between 300 and 1350 is not correct?

#

Domain is positive reals less than 140

final cedar Oct 12, 2022, 3:11 PM

#

Both were wrong

feral pilot Oct 12, 2022, 3:11 PM

#

Huh

#

What are your options?

final cedar Oct 12, 2022, 3:13 PM

#

#

I have that now and I don’t have options

feral pilot Oct 12, 2022, 3:14 PM

#

Domain is x>=0
Range is Y>=0
Imo

final cedar Oct 12, 2022, 3:15 PM

#

Okay yea that was correct

#

I can graph it

#

I just Need to know the range

#

hold on it’s sending

#

feral pilot Oct 12, 2022, 3:17 PM

#

Input the x values in 2x+2 what values do u obtain

final cedar Oct 12, 2022, 3:18 PM

#

I’m confused

feral pilot Oct 12, 2022, 3:19 PM

#

U just take a value of the domain say -2 and put it in g(x) i.e g(-2)=2*-2+2=-2

#

And do this for all values in the domain

#

The corresponding values that u obtain define the range

final cedar Oct 12, 2022, 3:21 PM

#

I’m still really confused I’m sorry about this

feral pilot Oct 12, 2022, 3:21 PM

#

Which part do u find difficult

final cedar Oct 12, 2022, 3:21 PM

#

so it would be g(-2)=2x+2

feral pilot Oct 12, 2022, 3:21 PM

#

g(x) is 2x+2
g(-2) is 2*-2+2

final cedar Oct 12, 2022, 3:22 PM

#

If I did x=-2

feral pilot Oct 12, 2022, 3:22 PM

#

It's what values g(x) takes when x=-2

final cedar Oct 12, 2022, 3:22 PM

#

oh so it’s -4x+2

#

Than

feral pilot Oct 12, 2022, 3:23 PM

#

?

final cedar Oct 12, 2022, 3:23 PM

#

If I were to input

#

-2=x

feral pilot Oct 12, 2022, 3:23 PM

#

We input it by replacing x in the expression

final cedar Oct 12, 2022, 3:23 PM

#

Yea

#

Wait

#

so what would be the range

feral pilot Oct 12, 2022, 3:24 PM

#

So just instead of x we write -2 and evaluate it

#

So now tell me what would be g(0)

final cedar Oct 12, 2022, 3:24 PM

#

Do I solve the problem?

final cedar Oct 12, 2022, 3:24 PM

#

feral pilot So now tell me what would be g(0)

0

feral pilot Oct 12, 2022, 3:24 PM

#

What happens when you sub in x=0 in 2x+2

final cedar Oct 12, 2022, 3:25 PM

#

it becomes 0+2

feral pilot Oct 12, 2022, 3:25 PM

#

Yep

#

So g(0) would be?

final cedar Oct 12, 2022, 3:25 PM

#

0

feral pilot Oct 12, 2022, 3:25 PM

#

0+2 is 0..!?

final cedar Oct 12, 2022, 3:26 PM

#

It would be 2

#

but if you input something you multiply

feral pilot Oct 12, 2022, 3:26 PM

#

Yep 👍

feral pilot Oct 12, 2022, 3:26 PM

#

final cedar but if you input something you multiply

Multiply where

final cedar Oct 12, 2022, 3:27 PM

#

So what would be the range

feral pilot Oct 12, 2022, 3:27 PM

#

Our expression is 2*x +2

#

{-2,0,2,4}

final cedar Oct 12, 2022, 3:29 PM

#

Where would it be on this graph?

feral pilot Oct 12, 2022, 3:29 PM

#

Select points (-2,-2),(0,2),(-1,0),(1,4)

final cedar Oct 12, 2022, 3:31 PM

#

Thank you so much for the help

#

I really appreciate it

#Please help ASAP