Solving linear systems by graphing | Systems of equations | 8th grade | Khan Academy

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  • Опубліковано 11 січ 2025

КОМЕНТАРІ • 241

  • @marku4998
    @marku4998 4 роки тому +71

    Khan Academy, helping students passing their exams since 2010. On behalf of all the student's that you helped, Thank you

  • @RedekerEleven
    @RedekerEleven 9 років тому +205

    "If you move to the right a bunch, you're gonna move down that same bunch."
    Said like a true mathematician.

  • @tabbylinn
    @tabbylinn 5 років тому +205

    That aqward moment when a you tuber teaches better then your own math teacher

    • @hala8333
      @hala8333 3 роки тому +8

      Khan is not just “some ytber” 😤

    • @sohumw1
      @sohumw1 3 роки тому +8

      @@hala8333 ikr mr. khan has saved us all at least 30 times

    • @malachiweaver2784
      @malachiweaver2784 2 роки тому +3

      Yes

    • @joshuabakai74
      @joshuabakai74 2 роки тому +6

      That aqward moment when you don’t know how to spell

    • @icqednixYo
      @icqednixYo 11 місяців тому +2

      @@joshuabakai74 in 2024 i type this comment.

  • @2good4soccer
    @2good4soccer 9 років тому +200

    I learn more in here than in class

    • @jaydenleon5015
      @jaydenleon5015 9 років тому +5

      same

    • @Karen-sz9xk
      @Karen-sz9xk 8 років тому +2

      Yep

    • @savannahm4275
      @savannahm4275 8 років тому +2

      haha same!!!

    • @DarkGamer-sc3of
      @DarkGamer-sc3of 7 років тому +1

      Bruno R true

    • @angelicrose8406
      @angelicrose8406 6 років тому +4

      Same my teacher just rants about how were not trying enough and that were failing because we neglect our education and bla bla bla he neglects to explain any of the lessons we do and just quickly does it and expects us to know how to do it. Sometimes he explains but he explains angrily

  • @916UNIT
    @916UNIT 10 років тому +73

    You sir, have saved my life

    • @mawawae3573
      @mawawae3573 9 років тому +4

      IKR lol many times

    • @thatoneweirdguy-1181
      @thatoneweirdguy-1181 7 років тому +1

      +Mawada Eskandar yep

    • @sh0dy
      @sh0dy 3 роки тому +2

      how's ur life now ur probably like 22 by know

    • @OkIPullUp2915
      @OkIPullUp2915 3 роки тому +1

      You still here

    • @sh0dy
      @sh0dy 3 роки тому +1

      @@OkIPullUp2915 ikr it’s been 7 years yes either in collage or has a job by now

  • @Nostrologyy
    @Nostrologyy 11 років тому +124

    why doesnt any math teacher in the world do problems that are like in the homework not the most simple forms of an equation...annoying

    • @johnlawrence9495
      @johnlawrence9495 4 роки тому +2

      It is to challenge your mind. It supposed to test if you can think outside the box. If the teachers just show everything to you. You are not gonna develope critical thinking.

    • @miranda0298
      @miranda0298 4 роки тому +5

      @@johnlawrence9495 but if i don't learn how to do a certain part of an equation i've never seen before, i can't solve it. shouldn't teachers be showing you how to do every type of equation so that you can memorize how to do it? that still takes work and practice on the student's part, but at least you're learning it. you can't expect kids to do well on something they weren't taught.

  • @nickcolella8845
    @nickcolella8845 7 років тому +372

    Who else is watching this so they can pass a quiz and not get grounded

  • @chips726
    @chips726 3 роки тому +20

    this man has saved all of us at one point

  • @Mixxmuff777
    @Mixxmuff777 11 років тому +17

    Thank You So Much This Helped Me A Lot!!!!

  • @fork4822
    @fork4822 9 років тому +49

    UGGGG these are usually super helpful but this time my brain wasn't absorbing it. :(

    • @savagefarmert
      @savagefarmert 8 років тому +8

      +S Law all khan academy videos for some reason never help me i don't know why :(

  • @Erin-dv9ke
    @Erin-dv9ke 5 років тому +36

    me: Okay, I'm gonna watch this and ACTUALLY LISTEN
    my brain: nOPITY NoPES LeTS WATCH YoUTUBe

  • @mordi9286
    @mordi9286 8 років тому +35

    Thank you Khan Academy! Now, at least maybe, I won't have a F in this class!

  • @erikgonzalez928
    @erikgonzalez928 8 років тому +11

    I love how my teacher shows us what something is called then Khan Teaches it to us

  • @Oxxenn
    @Oxxenn 11 років тому +11

    This is so much clearer to me now and my teacher dose not know how to explain any thing about this topic

    • @Dm-dw3tr
      @Dm-dw3tr 10 років тому +1

      some schools require a teacher to teach a certain way. Most time it is not up to the teacher to teach the way that is best for the student or classroom. I have friends in our local district that complain about this a lot. They must follow the rules or else find a new job.

    • @mirroredk-popdances3786
      @mirroredk-popdances3786 4 роки тому +1

      ikr they be like you understand in quarantine no one unmutes or says anything on time ok you understand says the teacher some one has a problem teacher looks at the message and says ok now class

  • @jacobwest-ringler1524
    @jacobwest-ringler1524 4 роки тому +31

    who else is watching this for online school in quarantine?

  • @9000Tempest9000
    @9000Tempest9000 10 років тому +74

    freakin homework

  • @thesenate5913
    @thesenate5913 6 років тому +9

    this guy
    saved my grades from depravity

  • @none-s5y
    @none-s5y 7 років тому +4

    What's the purpose of extending the lines when graphing?
    Is it done so that the lines reach quadrant I?

  • @tomboyrebel1546
    @tomboyrebel1546 10 років тому +4

    Lol at 4:46 he said: "Lets graph both of these, lets graph both of these, lets graph both of these" lol BUT I LOVE HIS VIDEO! HE IS THE BEST! HE HELPS ME LEARN SO MUCH BETTER!! THANK YOU!!!! :D

  • @jaydenmcnealy1070
    @jaydenmcnealy1070 3 роки тому +4

    That awkward moment when the title says 8th grade and you're learning it in 9th grade

  • @elgrngo6853
    @elgrngo6853 7 років тому +2

    These videos are helping me out so much, thank you Khan Academy and keep up the good work tho

  • @markandrie6913
    @markandrie6913 7 років тому +5

    Ive watched every math episodes in the website that means i already beat math.. But i dont get some of them, im not lying..

  • @hike4424
    @hike4424 3 роки тому +2

    WHY IS HE SO GOOD AT WRITING WITH HIS MOUSE AHHHHHH HES A GOD

  • @jasondom342
    @jasondom342 4 роки тому +12

    Yo, whose here in 2020 quarantine

  • @jasonroeder8134
    @jasonroeder8134 10 років тому +7

    lets graph both of these, lets graph both of these

    • @jasonroeder8134
      @jasonroeder8134 10 років тому +4

      Go one to the right and go down one, Go one to the right and go down one

  • @zaruzoba
    @zaruzoba 5 років тому +2

    Thank you very much!!!

  • @Trxxx.
    @Trxxx. 2 роки тому +1

    THANK YOU FOR HELPING ME UNDERSTAND THIS LINEAR EQUATION I REALLY DONT KNOW HOW TO SOLVE IT AND AFTER WATCHING YOUR VIDEO I DID SUCCEED ON HOW TO DO IT ALTHOUGH I CAN NOW ANSWER MY TEST

  • @dreamingdragon4896
    @dreamingdragon4896 3 роки тому +1

    Thanks for the explanation it really helped me

  • @ashlynmaloney
    @ashlynmaloney 7 років тому +1

    really helps with all this summer schoolwork they gave us -_-

  • @laylacerated
    @laylacerated 4 роки тому +6

    i literally have a 10% in math this video saved me

  • @CASproductions100
    @CASproductions100 13 років тому +1

    thanks to you i'm not going to blow off my homework

  • @MrRedsox27
    @MrRedsox27 14 років тому +1

    Outstanding work Mr. Khan!!

  • @yafetteshome9515
    @yafetteshome9515 8 років тому +2

    Helped me so much thanks

  • @David-ok1wb
    @David-ok1wb 6 років тому +1

    you are a genius!!!!

  • @Miranda_Writes
    @Miranda_Writes 7 років тому +2

    You make it look so easy.

  • @Yashiro_Nene2
    @Yashiro_Nene2 4 місяці тому

    This was more helpful than math classes at school lol.

  • @josephsuding5847
    @josephsuding5847 7 років тому +2

    Thank you

  • @niconiconiiv2398
    @niconiconiiv2398 10 років тому +1

    thanks you bro you save my 8 grade year and a c t exam for high school thanks for prepare me

  • @izzyoss9446
    @izzyoss9446 9 років тому +1

    these help so so much

  • @kyladiaz6862
    @kyladiaz6862 5 років тому +1

    oh my gosh I don't understand why would you repeat to reach the x-axis 6:18 help me pleasee I need an asap answer for my homework I honestly wat to know why

    • @tammymejia1941
      @tammymejia1941 4 роки тому +1

      It’s done to make it reach quadrant 1

  • @anqichu-br6cd
    @anqichu-br6cd Рік тому

    ❤🎉This is the best !!!!!!

  • @haidan9652
    @haidan9652 3 роки тому +1

    I LOVE YOU SAL KHAN

  • @aswmdude24
    @aswmdude24 11 років тому +1

    What program do you use to write your explanations

  • @clemtakeover
    @clemtakeover 4 роки тому

    you’re a life saver

  • @YoUrBeHaViOriSOuGh99
    @YoUrBeHaViOriSOuGh99 2 роки тому +1

    POV: your supposed to be learning it but instead your scrolling through the comments looking for some sort of motivation

  • @azan9484
    @azan9484 4 роки тому +1

    I hate how UA-cam's examples are easier than what out teacher gives

  • @hhekwhdhjrjrkekebe2364
    @hhekwhdhjrjrkekebe2364 3 роки тому +1

    When u feel like u understand something but realize there is no way u understand it till u watch khan academy and be like oh wow that wasn’t that hard I’m just meantally slow in the head ig

  • @chriscano4047
    @chriscano4047 8 років тому

    very helpful, better than my pre tsi tutorial from plato.com...thank you

  • @dlgang
    @dlgang 10 років тому +2

    when x=5 it looks like you wrote y=4 at 1 min 39 sec but it is y=8 (you said it but wrote it to look like 4)

  • @jazzythejazz8817
    @jazzythejazz8817 4 роки тому

    Omg i got it thankyou 😭

  • @k2s955
    @k2s955 4 роки тому

    This was vary helpful

  • @DELLARUIZ
    @DELLARUIZ 11 років тому

    Thanks!!!!! much clearer

  • @sarahpham4499
    @sarahpham4499 9 років тому +2

    what if the two lines are equal, will it be one solution, no solution, or infinite solutions?

  • @alexaramos9920
    @alexaramos9920 6 років тому +1

    Wouldn’t he have to got to the left and down because it’s negative x or do you just go toward the line

  • @uzairhussain4856
    @uzairhussain4856 3 роки тому

    .... If youtube uncle shows khan academy in search results, i always click at first. From pakistan. ♥️

  • @zachary9929
    @zachary9929 7 років тому +1

    I understand this now.

  • @sebastianpoto
    @sebastianpoto 11 років тому +1

    How would I do
    x-y=4
    3x+2y=7 ? x.x

  • @levimata9053
    @levimata9053 9 років тому +1

    Thanks Sal for all your help! you have saved my butt so many times XD but what if the equation looks like this: Y= -2x

  • @JoseFlores-iz9hq
    @JoseFlores-iz9hq 8 років тому +19

    this shit soo fucking confusing

    • @lonnelljohnson6969
      @lonnelljohnson6969 7 років тому +1

      how is it confusing? math concerns about being patient and understanding the issue, either u have no patience or u need a different teacher besides khan

  • @seonghwanshin2834
    @seonghwanshin2834 10 років тому +2

    What kind of application or program do you use for this?

  • @mordi9286
    @mordi9286 8 років тому +3

    Can someone help me with a problem like this?
    y=-7x-1 and y=-3x-3
    I don't know how to graph this, and my teacher is anything but understanding and helpful.

    • @zman9315
      @zman9315 5 років тому +5

      was gonna help but uhh, it's been 2 years

    • @robloxax6289
      @robloxax6289 Рік тому

      @@zman9315 BYE LMAOAO

  • @pabloespinosa1888
    @pabloespinosa1888 8 років тому +1

    Another one.xD 4:27

  • @AmanGupta-wg8oi
    @AmanGupta-wg8oi 8 років тому

    How is he so handy with that? Applications like that are so hard to use

  • @LandaBatman
    @LandaBatman 3 роки тому +1

    ''what was that fight''- 2021- jacob

  • @chinesefood8138
    @chinesefood8138 9 років тому

    Thank you so much!

  • @robertgarcia2673
    @robertgarcia2673 10 років тому +2

    thanks

  • @yousefayman8784
    @yousefayman8784 8 років тому +2

    what is the name of khan academy app or the program that he use to make exampels

    • @narooby2712
      @narooby2712 8 років тому +1

      Yousef Ayman the app is khan academy same :)

  • @ElektroMagnetizm
    @ElektroMagnetizm 3 роки тому

    i was doing one on khan but the quality was bad so i came here to youtube

  • @azan9484
    @azan9484 4 роки тому +1

    Is it the same when the x and y are squared???

  • @Antpoison
    @Antpoison 3 роки тому +2

    When you realize this was made 11 years ago 💀

  • @booonesaaw
    @booonesaaw 9 років тому +1

    how would you solve x-2/3 - y-2/2 = -2 , thank you

  • @mayakhalife1013
    @mayakhalife1013 3 роки тому

    Omg Tysm 😭

  • @muhammadmasumbillah2830
    @muhammadmasumbillah2830 2 роки тому

    How it became x =5 1:22

  • @mmaletatsihlubi8169
    @mmaletatsihlubi8169 Рік тому

    I learn more in here than class 😅

  • @averypopowich
    @averypopowich 4 роки тому

    this jus saved me

  • @jaydachaulk3733
    @jaydachaulk3733 2 роки тому

    So What happens if its not In Y=Mx+B form? Is there a way to turn it into that or?

  • @kylatagudando5181
    @kylatagudando5181 3 роки тому

    My teacher put this on our folder to watch so we can enhance our understanding but this is not on our book. Its supposed to be x + or - y = blank. Then to find the x and y-intercept let y=0 when you want to find x-intercept and let x=0 to get the y-intercept says on the book.

  • @christinashane968
    @christinashane968 3 роки тому +1

    who else is watching khan academy after hearing Elon musk donated dollars to this institution?

  • @ckat6785
    @ckat6785 5 років тому

    thanks man

  • @deathandroses3861
    @deathandroses3861 4 роки тому

    Do u have a teaching dergee cus some reason u teach me better than my own teacher

  • @meihyun273
    @meihyun273 9 років тому

    2:36 thats a green line???

  • @yuaajn4090
    @yuaajn4090 3 роки тому

    天才かて

  • @garnerpetering2953
    @garnerpetering2953 4 роки тому +3

    bro im stressing out i dont know what to do i didnt pay attention and this shit is hard asf

  • @pastyle0001
    @pastyle0001 6 років тому +2

    THE WORST PART ABOUT THIS IS THAT ITS NEW MATH AND THEY ARE TRYING TO TEACH US IT, WHAT WILL THIS DO TO HELP US SURVIVE?

    • @joobypooh3002
      @joobypooh3002 6 років тому +2

      Horrorgag the world needs mathematicians and scientists. math is heavy in science.

    • @addasonny
      @addasonny 3 роки тому

      @@joobypooh3002 But if you are not looking into becoming a mathematician or a scientist it really isn’t useful.

  • @jordan177606
    @jordan177606 11 років тому +1

    Anyone else have their teacher show this video?

    • @mirroredk-popdances3786
      @mirroredk-popdances3786 4 роки тому

      fr
      my algebra teacher: if u need help go ahead and watch a Khan Academy video
      Me:👁️👄👁️ bu...bu....but your the teacher i need help right here and right now lmao

  • @XxxEverRosexxX
    @XxxEverRosexxX 12 років тому

    but what if I have 3x+4y=22. how do i graph that?

  • @jessicanewman1908
    @jessicanewman1908 5 років тому +7

    Am I color blind or is that actually yellow

    • @tammymejia1941
      @tammymejia1941 4 роки тому +2

      No you’re orange/green colorblind

    • @mirroredk-popdances3786
      @mirroredk-popdances3786 4 роки тому +1

      its yellow lmao

    • @anqichu-br6cd
      @anqichu-br6cd Рік тому

      you are color blind😢😢😢 ha ha ha

    • @anqichu-br6cd
      @anqichu-br6cd Рік тому

      😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢

  • @alexr.4150
    @alexr.4150 9 років тому +3

    This says 8th grade but they are teaching this in the 7th

    • @JeffnasticsPvP
      @JeffnasticsPvP 8 років тому +1

      +알렉스야 ALEX R. lol I'm getting taught this in 9th

    • @warweasel2832
      @warweasel2832 8 років тому

      8th for me

    • @alexaramos9920
      @alexaramos9920 6 років тому

      IM in 6th and there teaching in 😥😥

    • @e11adefran
      @e11adefran 6 років тому

      dude this is on my grade 10 academic math exam what

    • @branden2805
      @branden2805 6 років тому

      I'm watching in 12th grade

  • @vern9093
    @vern9093 8 років тому +14

    math is so stupid

    • @dj2kbased
      @dj2kbased 8 років тому +2

      Swear to God fam smh

    • @OlivertheJoyboy
      @OlivertheJoyboy 8 років тому +3

      +Vincent P Not when you're taught by Khan Academy

    • @mordi9286
      @mordi9286 8 років тому +3

      Vincent P This is true. My Algebra teacher is the worst. I really try and she doesnt explain anything properly.

  • @HarisShazad-r2b
    @HarisShazad-r2b Рік тому

    Sir if I am not wrong that is a pink line not purple

  • @higfatforever4503
    @higfatforever4503 4 роки тому

    I can’t see the intersection

  • @chris_p_nuts262
    @chris_p_nuts262 6 років тому +3

    Again, no reason to learn this cause we’re never going to use this in real life 🤦🏻‍♂️

    • @VoltBrains
      @VoltBrains 6 років тому +1

      Bruh you are dumb yes you will

    • @swizzi4794
      @swizzi4794 6 років тому +2

      I agree lol

    • @addasonny
      @addasonny 3 роки тому +1

      Depends on what job you get in the future.

  • @muskaanrai897
    @muskaanrai897 7 років тому +2

    only reason why im here now is because of the new bts comeback and i cant seem to focus anymore GAH

  • @misfit2370
    @misfit2370 8 років тому +1

    I dont understand how to do a problem like 3x - 4y =0

    • @viditmittal9631
      @viditmittal9631 8 років тому +2

      assume some value for x, and find the respective value for y. suppose x=1. put it in ur eq and find y. similarly put x=2 and find y.......now draw the line by joining the co-ordinates
      maybe this would help

    • @iLoveTurtlesHaha
      @iLoveTurtlesHaha 8 років тому +1

      The y intercept is 0. So y = 3/4x + 0 .. you know you're going to have a point on the graph that intersects (0,0).

  • @EM_Jesussaveslives7
    @EM_Jesussaveslives7 3 роки тому +1

    JESUS IS COMING SOONER THAN WE THINK, HE LOVES YOU✝️❤️ Please ask Him to help you obey Him and help you live in His Will in Jesus Name is Christ Mighty Name and be baptized in Jesus Name with water and the Holy Ghost ✝️❤️ MUCH LOVE THROUGH CHRIST JESUS✝️🤍

  • @mordi9286
    @mordi9286 8 років тому

    What if all there is y=x+3 and y=2x? What do I do? There is no y intercept! so where does the 2 go?!😫😫😫😫 I hate my Algebra teacher now..She is heartless, and she doesnt even care...

    • @davejfern
      @davejfern 8 років тому

      Mak Attack2o2 for y=2x you add a random numbers than multiply it by 2. Like Put 0 y=2(0) = Y=0 or put in a 2 Y=2(2) y = 4

    • @mordi9286
      @mordi9286 8 років тому

      andrew tripp Aaahh thank you! My algebra teacher isn't as bad now, now it makes more sense!

  • @netherdemon
    @netherdemon 4 роки тому +1

    it is yellow

  • @iLoveTurtlesHaha
    @iLoveTurtlesHaha 8 років тому +15

    We draw our y-axis, that's my y-axis. OH GOD, I CAN'T TAKE IT ANYMORE. The constant repeating and repeating of every minute detail. We are not stupid, get on with it.

    • @braydenb.7816
      @braydenb.7816 8 років тому +32

      i mean i'm here because i'm stupid and i need a better understanding so don't speak for me

    • @1up910
      @1up910 7 років тому +5

      iLoveTurtlesHaha haha "constant", get it?

    • @slurp3194
      @slurp3194 6 років тому +2

      you are stupid cause you are watching this cause you didnt fully get in class and some people are bad in math they need the extra more detailed explanation

  • @BraydenOverHeaven
    @BraydenOverHeaven 7 років тому

    how do u fucking check the equations?

  • @LandaBatman
    @LandaBatman 3 роки тому +1

    jacob is better