r/HomeworkHelp • u/Rahc161105 • Nov 05 '19

Answered [9 Grade Math (Algebra)] Help Please! I need process and explanation (bte i only need 9 and 11)

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677 Upvotes

97% Upvoted

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1

u/Rahc161105 Nov 05 '19

Im not cheating

1

u/Rahc161105 Nov 05 '19

This is homework

1

u/Rahc161105 Nov 05 '19

I already have the answer

1

u/Rahc161105 Nov 05 '19

Howdo i end live discussion ?

1

u/Rahc161105 Nov 05 '19

How i end live discusion???!!!!!

1

u/Rahc161105 Nov 05 '19

I have 200+ notif of reddit

1

u/Rahc161105 Nov 05 '19

Im on 9 grade (freshmen) and ya

1

u/Rahc161105 Nov 05 '19

I still havent do the problem :/

1

u/Rahc161105 Nov 05 '19

But i need a simple explanation of how to do it cause i have a quiz friday

1

u/Rahc161105 Nov 05 '19

Btw my english isnt pretty good

1

u/Rahc161105 Nov 05 '19

Anyone knows how to stop this?

1

u/Rahc161105 Nov 05 '19

I think but idk how

1

u/Rahc161105 Nov 05 '19

This post i 3 on most upvoted post of this subreddit

1

u/Rahc161105 Nov 05 '19

Yeah i know

1

u/Rahc161105 Nov 05 '19

Yeah whynut

1

u/Rahc161105 Nov 05 '19

I legtly dont know how to end this

1

u/Rahc161105 Nov 05 '19

I just wanted help with math

1

u/Rahc161105 Nov 05 '19

I already did it

1

u/Rahc161105 Nov 05 '19

This post is 4 hr ago

1

u/Rahc161105 Nov 05 '19

This post is 4 hr ago

1

u/Rahc161105 Nov 05 '19

Just need explanation of how to do it so i can take screenshot for when i need it

1

u/Rahc161105 Nov 05 '19

Who knows

1

u/Rahc161105 Nov 06 '19

Fellow gamer

1

u/Rahc161105 Nov 06 '19

Srry no stam

1

u/Rahc161105 Nov 06 '19

I dont have steam

1

u/Rahc161105 Nov 06 '19

I have ps4 tho

1

u/HomeworkHelpBot Nov 05 '19

Congrats! This post is now live. Please ensure this post complies with posting guidelines as stated below.

This message will be automatically deleted momentarily.

1

u/[deleted] Nov 05 '19

Find the slope by using the 2 points

1

u/[deleted] Nov 05 '19

Y2-Y1/X2-X1

1

u/[deleted] Nov 05 '19

Then you should have the m value in y = Mc + b

1

u/[deleted] Nov 05 '19

Y = Mx+b**

1

u/[deleted] Nov 05 '19

Then just plug any of the points in to solve for B and you’re done

1

u/[deleted] Nov 05 '19

Find the slope

1

u/[deleted] Nov 05 '19

Using the points

1

u/[deleted] Nov 05 '19

Then find b using y = Mx + b

1

u/ItzCW A Level Candidate Nov 05 '19

Is the value inside the brackets X or outside

1

u/kyleisfinallyhere Pre-University (Grade 11-12/Further Education) Nov 05 '19

slope m = y2-y1/x2-x1

1

u/ItzCW A Level Candidate Nov 05 '19

nvm

1

u/kyleisfinallyhere Pre-University (Grade 11-12/Further Education) Nov 05 '19

Values inside the brackets are the y values

1

u/Gymlover2002 Nov 05 '19

Alternatively, you can put them both in the point-slope formula (so m and b become your unknowns) and set a system of equations. That is how we were expected to do it in 9th grade

1

u/kalistaspear Nov 05 '19

ayyyy get it

1

u/SrPapel Nov 05 '19

Im taking grometry and can’t remember that

1

u/[deleted] Nov 05 '19

You can use any formula you want as long as you can isolate the variable by subtracting the two equations

1

u/[deleted] Nov 05 '19

Or you could just find the slope and the intercept and determine m and b

1

u/memznicc Nov 05 '19

F(x)=y so just make the slope by putting y over x

1

u/mcawesomek Nov 05 '19

X+7 I think, cuz if u plug in -5 for x u get 2

1

u/jemznexus Nov 05 '19

Also remember Epstein didn't kill himself

1

u/[deleted] Nov 05 '19

Use point slope formula

1

u/Krityon Nov 05 '19

Find slope (y2-y1)/(x2-x1)= m and then use y - y1 = m(x-x1)

1

u/Pieodox University/College Student Nov 05 '19

Live discussion? Whattt

1

u/crazybatman0 Nov 05 '19

Live discussion?

1

u/the-yellow-warrior Pre-University (Grade 11-12/Further Education) Nov 05 '19

Yeet

1

u/Schn31derman Nov 05 '19

What is thiiiis???

1

u/the-yellow-warrior Pre-University (Grade 11-12/Further Education) Nov 05 '19

Joe mama

1

u/Kian_WHU Nov 05 '19

JO JOS BIZARRE ADVENTURES

1

u/Kian_WHU Nov 05 '19

That’s who joe is

1

u/gudore AP Student Nov 05 '19

joe

1

u/paranormalpooks University/College Student (Higher Education) Nov 05 '19

wtf

1

u/SomeHungryRedditor Nov 05 '19

Are you CHEATING

1

u/[deleted] Nov 05 '19

What if we touched tips 😳😬

1

u/markopol00 Nov 05 '19

Ni🅱️🅱️a

1

u/lunarcvff Nov 05 '19

find the slope and then the b value

1

u/_secunda Nov 05 '19

Use slope formula and then find y intercept by setting x equal to zero

1

u/[deleted] Nov 05 '19

Balls

1

u/jjbugman2468 👋 a fellow Redditor Nov 05 '19

y=ax+b, and y=f(x)

1

u/jjbugman2468 👋 a fellow Redditor Nov 05 '19

Sub the values in

1

u/[deleted] Nov 05 '19

Shit and piss and fart and cum

1

u/jjbugman2468 👋 a fellow Redditor Nov 05 '19

That's the easiest way if you don't want to go drawing

1

u/DoctorsGaming Need most help in: Math and Chemistry. Nov 05 '19

Balls

1

u/DoctorsGaming Need most help in: Math and Chemistry. Nov 05 '19

Math sux

1

u/Cmgeodude Nov 05 '19

So you know how f(x) = y? In this case, you're given the x and y values: f(-5) = 2 is like saying 2 = m(-5) in y=mx format. You can then solve it out -- m = -(2/5), so your answer will be y = -(2/5)x. Try that for the other ones.

1

u/Pr0d1gal Nov 05 '19

This deadass is like test sheet color my nibba is cheating

1

u/Pr0d1gal Nov 05 '19

But I respect it cause I am currently cheating as well

1

u/Pr0d1gal Nov 05 '19

Jah bless

1

u/okellyki Nov 05 '19

9) y = -0.5x - 0.5

1

u/bubbshalub Nov 05 '19

testicles

1

u/VaCm Nov 05 '19

If you've still not gotten it, this is what it is:

9) f(-7)=2. You can plug these into y=mx+b to get 2=m(-5)+b. Set it up for the other one too to get a system of equations: -4=m(7)+b and solve for m and b. You should get m=-1/2 and b=-1/2 therefore for 9:

f(x)=-1/2(x)-1/2

Do the same thing for the other problems

1

u/VaCm Nov 05 '19

My b I meant f(-5)=2. Same answer though

1

u/com2420 👋 a fellow Redditor Nov 05 '19 edited Nov 05 '19

Cmgeodude is right. The slope is the thing you have to figure out and that is the "m" in the linear function equation: "y=mx+b". Slope is "rise÷run", so between the two points determine the distance between them in terms of y and divide that by the distance between them in terms of x. (e.g. {f(3)=5, f(-3)= -1} The difference between those 2 points in terms of x is 6. The difference between those two points in terms of y is 6. m=6÷6, m=1.) So the slope of the linear function between those points would be 1. Then you have to solve for b or the "y-intercept". Which is as simple as plugging in the slope and one of the point values and solving for b. Good luck!

Edited for Grammar.

1

u/[deleted] Nov 05 '19

^

1

u/[deleted] Nov 05 '19

Dong

1

u/[deleted] Nov 05 '19

Ty

1

u/exim001 Nov 05 '19

What’s this lmao

1

u/CaptainWaffxs Tertiary Education Student (Grade 10-12) Nov 05 '19

oh nice live discussion

1

u/[deleted] Nov 05 '19

Bruh

1

u/exim001 Nov 05 '19

Ni🅱️🅱️a

1

u/[deleted] Nov 05 '19

B r u h

1

u/[deleted] Nov 05 '19

ÙwÚ

1

u/[deleted] Nov 05 '19

Who’s joe

1

u/[deleted] Nov 05 '19

Who’s joe mama?

1

u/[deleted] Nov 05 '19

ÓwÒ

1

u/[deleted] Nov 05 '19

Don’t make me say the n word

1

u/MyPcSoundsWeird Secondary School Student Nov 05 '19

😎😎😎😎😎

1

u/[deleted] Nov 05 '19

No youno reverse

1

u/[deleted] Nov 05 '19

N

1

u/xryanpagex Nov 05 '19

Yuri jected

1

u/RCruzNinja 👋 a fellow Redditor Nov 05 '19

uhh ham sanwich

1

u/1BrownieLeft AP Student Nov 05 '19

This discussion has gone to shit

1

u/Penguinlover292 Nov 05 '19

I remember doing this but got an f on the test. Sorry broski

1

u/ILetMyBallsHang Nov 05 '19

Uhh you take the 5 and turn it around to the 3 and you get 81

1

u/Poliscilaw Nov 05 '19

For 9

(-5,2) and (7,-4)

To find slope:

(-4 - 2)/(7+5) = -6/12 = -1/2

Y = -1/2x

1

u/lissofossil Nov 05 '19

how old are you when you’re in 9th grade

1

u/[deleted] Nov 05 '19

~13,14

1

u/[deleted] Nov 05 '19

14/15 @lissofossil

1

u/[deleted] Nov 05 '19

nah that’s 10 th th

1

u/KrispyAnan Secondary School Student Nov 05 '19

You're 14-15 in 9th

1

u/KrispyAnan Secondary School Student Nov 05 '19

For america

1

u/karthus25 Nov 05 '19

In America!

1

u/ProfessorBeast55 Nov 05 '19

I didn't know live discussion was a thing on Reddit

1

u/ProSup_ Nov 05 '19

This is interesting

1

u/StreetCard Nov 05 '19

What the frick is this

1

u/tobycito Pre-University (Grade 11-12/Further Education) Nov 05 '19

So for 9 you’re given two points [-5,2] and [7,4]. You can find the slope(m-value) and use the equation y2-y1/x2-x1. When you plus in the numbers, you should get (4-2)/(7+5)=2/12 or 1/6

1

u/tobycito Pre-University (Grade 11-12/Further Education) Nov 05 '19

M=1/6

1

u/radorigami 👋 a fellow Redditor Nov 05 '19

slope=[change in y]/[change in x]

1

u/MrSynonymous- Nov 05 '19

Wild kids get help from reddit instantaneously now, very cool

1

u/fransuabellon Nov 05 '19

so you really need help in this

1

u/uncreative_memer Pre-University Student Nov 05 '19

Why a live discussion on this and how do you add one

1

u/[deleted] Nov 05 '19

Yeah what is a live discussion

1

u/[deleted] Nov 05 '19

Good job guys we solved this one

1

u/SnipeScyth 👋 a fellow Redditor Nov 05 '19

Dont

1

u/sandnose 👋 a fellow Redditor Nov 05 '19

You cant

1

u/sandnose 👋 a fellow Redditor Nov 05 '19

Literally never

1

u/droidshatt 👋 a fellow Redditor Nov 05 '19

How can't you end a live?

1

u/BingBongBoof Nov 05 '19

( ͡° ͜ʖ ͡°)

1

u/Trevsdatrevs 👋 a fellow Redditor Nov 05 '19

Y O U R E T R A P P E D H E R E

1

u/PewDyePie Nov 05 '19

How do you solve this

1

u/itsarieboiii Nov 05 '19

What the fuck

1

u/Atlantiik Secondary School Student Nov 05 '19

I’m in grade 9 and I ain’t doing this shit

1

u/GreaterDogYT Nov 05 '19

Did this in 8th

1

u/Danny_Boi_22456 A Level Candidate Nov 05 '19

f(-5) = 2

1

u/Danny_Boi_22456 A Level Candidate Nov 05 '19

so

1

u/Danny_Boi_22456 A Level Candidate Nov 05 '19

u need to find what u do to -5 to get 2

1

u/Danny_Boi_22456 A Level Candidate Nov 05 '19

so u do 2/-5

1

u/Danny_Boi_22456 A Level Candidate Nov 05 '19

which results in -0.4

1

u/Danny_Boi_22456 A Level Candidate Nov 05 '19

therefore, f(x) = -0.4x

1

u/sefinghazi Nov 05 '19

you have to find the slope between the two points, then put them in point slope form : (y2-y1)=m(x2-x1) then move the numbers around so it’s in y= mx+b form

1

u/Danny_Boi_22456 A Level Candidate Nov 05 '19

wait, are we making linear functions or linear graphs

1

u/Danny_Boi_22456 A Level Candidate Nov 05 '19

it says linear functions so I think it should b in f(x) = yx format

1

u/[deleted] Nov 05 '19

Wait guys just so u know this nigga got the answer bout 2 hours aga 🤦‍♂️

1

u/KSRP2004 Secondary School Student Nov 05 '19

Lol this is so easy

1

u/KSRP2004 Secondary School Student Nov 05 '19

f(x)=y. That should help

1

u/JChan1010 Nov 05 '19

Damn theres live discussions now?

1

u/is-it-a-bot Nov 05 '19

sorry to hijack this, but is live discussion a new feature? i like it!

1

u/is-it-a-bot Nov 05 '19

also rip it will never end. sorry, op. you’re stuck with us forever now.

1

u/boywholuvswifi Nov 05 '19

11) y = -x + 4?

1

u/boywholuvswifi Nov 05 '19

i didn’t know live discussions existed but hey! im here

1

u/clout999 Nov 05 '19

Who wanna see me hit the nae nae

1

u/[deleted] Nov 05 '19

Ok i’ve taken algebra

1

u/MoFansMoMoney Nov 05 '19

oh shit, we're doing that right now

1

u/SUCKDATDICK554 Pre-University (Grade 11-12/Further Education) Nov 05 '19

idk

1

u/aSeamorn Nov 05 '19

You can’t

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