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Algebra - Solving Inequalities

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  • čas přidán 3. 11. 2016
  • There is a now-famous rule about switching the inequality sign whenever multiplying or dividing both sides by a negative. But why? In another special video of Yay Math in Studio, we go over the rule, then apply it to solve several inequalities. The number line comes up too, so we explore that.
    Then, we go over some expressions that come up in word problems, such as what "at least, at most, no more than" and "no less than" mean with inequality signs. YAY MATH!
    Learning can always be fun and connective. Please visit www.yaymath.org for:
    • all videos
    • free quizzes
    • free worksheets
    • debut book on how to connect with and inspire students
    • all-in-one math courses that teachers and parents can use, backed by Yay Math energy

Komentáře • 253

  • @janetsoriano4280
    @janetsoriano4280 Před 6 lety +139

    we need more people like you in the world

  • @fifahmmkad189
    @fifahmmkad189 Před 3 lety +37

    Im honestly astonished on how simple my math teachers could've taught inequalities

    • @pkus20
      @pkus20 Před 3 lety

      Sameee 😂

    • @lennoxroger5311
      @lennoxroger5311 Před 3 lety +1

      I know im asking the wrong place but does someone know of a way to log back into an instagram account??
      I was stupid forgot my password. I would love any tricks you can give me

    • @fifahmmkad189
      @fifahmmkad189 Před 3 lety +1

      @@lennoxroger5311 just send an email reset password

  • @MrMsMe77
    @MrMsMe77 Před 6 lety +26

    You are funny ...best of all, easy to understand math with you. I wish you were my math teacher!

  • @happycakes1946
    @happycakes1946 Před 5 lety +29

    Wow multiplying by (-1) really demonstrates the reason why we have to flip the sign, thank you sir!

    • @kevinrawding6730
      @kevinrawding6730 Před 4 lety +2

      Jackington Kellogers it’s not that it’s (-1) but because it’s negative don’t think about the number but think about if you are multiplying or dividing it by a negative

  • @secondwind5689
    @secondwind5689 Před 3 lety +8

    I have to say, actually explaining why a function works a certain way instead of forced memorization works so much better to learn a topic👍

  • @alfredsolari9172
    @alfredsolari9172 Před 3 lety +3

    I wish you had been my maths teacher. You are crystal clear in your explanations. Have a day and please continue to make these videos.

  • @liza.j590
    @liza.j590 Před 3 lety +7

    It’s sad that we come back to videos like these on CZcams. And ppl wonder why teachers don’t get paid much. But I hope he does Bc he’s awesome!!!!

  • @princess_aaliyah7051
    @princess_aaliyah7051 Před 7 lety +45

    u make things so much clearer💯®☝

  • @grahamkerr9143
    @grahamkerr9143 Před 3 lety +3

    honestly, I've never had so much fun learning about inequalities. Seriously though, great content and even better tuition. Good job!

    • @yaymath
      @yaymath  Před 3 lety +2

      Graham: thank you. It's an honor to be in your corner during your learning journey.

  • @sheamendes
    @sheamendes Před 6 lety +50

    Did he just say Whatup? That was the best way to start a video, no wonder I replayed twice. He is so entertaining to watch yet he gets to the point. I wish you were my teacher! You are so funny & you teach very well. Also, wouldn't at least mean less because how can you guess you have more than what you think you have rather than underestimating, @yaymath?

    • @hewwothere3862
      @hewwothere3862 Před 6 lety +1

      At least means at the minimum or not less than. I guess you know what "minimum" means don't you?

    • @thegoodlydragon7452
      @thegoodlydragon7452 Před 4 lety +1

      Why would a math teacher be less likely to say whatup? You know intellectuals are actually human, right? He's not a robot.

  • @Opethianaut
    @Opethianaut Před 6 lety +5

    Thank you! I'm trying to go after my GED and Math is all that I have left to achieve. This helped! Thank you!

  • @iamlazarow3526
    @iamlazarow3526 Před 5 lety +8

    I just passed my math test for the GED today. Your videos really helped me achieve the math. Thank you and God bless you.

    • @yaymath
      @yaymath  Před 5 lety +4

      What a huge honor it is to be in your corner. Congratulations on this huge milestone in your life.

    • @iamlazarow3526
      @iamlazarow3526 Před 5 lety +1

      @@yaymath thank u so much boss man. U make math interesting while cracking jokes. Its a nice intermission lol. Stay blessed big bro and thanks again!

    • @camrynpope1819
      @camrynpope1819 Před 5 lety +1

      I'm trying to pass the GED math myself man. Wish me luck. 😁

    • @iamlazarow3526
      @iamlazarow3526 Před 5 lety +2

      @@camrynpope1819 for all that i studied, i feel like i was given kitty queations. But hey, I'll take it. Just study hard and the questions will turn to kitty questions. I hopeu get it. Please let us know how u did.

    • @camrynpope1819
      @camrynpope1819 Před 5 lety +2

      @@iamlazarow3526 Thanks for the advice. I will definitely let you guys know 😁

  • @wendyoffroad
    @wendyoffroad Před 5 lety +8

    I love your logical explanation! This is a great video... I think we've watched this at least four times. Yay Math!!!

  • @vili8025
    @vili8025 Před 4 lety +4

    Can a number be greater than itself?
    Yes, it's a bloke's mental state called "A Legend in his own mind"

  • @willowtree9548
    @willowtree9548 Před 6 lety +8

    Yaymath u are saving me from despair and hopefully my GPA as well!!
    Loving your teaching skills

    • @tuquyento4322
      @tuquyento4322 Před 5 lety +1

      Hello willowtree , What class are you in?

  • @KaturahBrwn
    @KaturahBrwn Před 7 lety +95

    awesome wish he was my teacher

  • @ninjanina4299
    @ninjanina4299 Před 4 lety +2

    Thank you so much, you helped me understand this so much easier than other videos. You are also a good entertainer as a teacher. You are a great help.

  • @lhozahoro5788
    @lhozahoro5788 Před 5 lety +5

    Super helpful. *loudly exclaims* “GONE” my favorite part 😂!

  • @user-lx3wb9kj7n
    @user-lx3wb9kj7n Před 6 měsíci +1

    00:12 Solving inequalities involves adding, subtracting, multiplying, and dividing with one exception.
    02:19 Multiplying by negative numbers requires switching the inequality sign.
    04:20 Solving inequalities by applying rules and logic.
    06:40 Solving inequalities using algebraic manipulation
    08:38 When multiplying or dividing both sides, flip the sign of the inequality.
    10:27 Solving inequalities involving multiplication and addition.
    12:27 Understanding the concept of 'at least' and 'at most'
    14:30 Understanding the concept of 'no less than' and 'no more than'.
    Crafted by Merlin AI.

    • @yaymath
      @yaymath  Před 2 měsíci

      These timestamps are great!

  • @RaidsHim
    @RaidsHim Před 4 lety +2

    13:06 I love this guy

  • @hilashirom5652
    @hilashirom5652 Před 7 lety +20

    i love this teacher

  • @msr5565
    @msr5565 Před 4 měsíci

    I love that last thing you said about how we're all in the same boat trying to make sense

  • @loeyverse6601
    @loeyverse6601 Před 3 lety +1

    another great math teacher found on youtube! tysm.

  • @joyakaram884
    @joyakaram884 Před 4 lety +2

    youre literally amazing thank you

  • @anamanning4460
    @anamanning4460 Před 4 lety +2

    Thanks for the video
    I was getting frustrated with my math HW, but know i feel really comfortable with it.

  • @joseparedes6201
    @joseparedes6201 Před 4 lety +1

    Beautiful multiplication by -1. Easy to understand the rule. Thank you.

  • @numbers6246
    @numbers6246 Před 3 lety

    This guy is the best teacher ever !!!!

  • @thelightshipkell8101
    @thelightshipkell8101 Před 3 lety

    Finally a energetic math teacher

  • @Mikechurch1999
    @Mikechurch1999 Před 5 lety +49

    i believe that is a alligator sir.

    • @ifyouseethisusernameyoumus1405
      @ifyouseethisusernameyoumus1405 Před 5 lety +1

      Let me correct your sentence, just because I'm a Grammar Nazi.
      Correction: I believe that is an alligator, sir.

    • @ifyouseethisusernameyoumus1405
      @ifyouseethisusernameyoumus1405 Před 4 lety +2

      @ACHO Jesus is God. There is a trinity: The Father, the Son, and the Holy Spirit and they are all identified as God. I can argue that and win it with evidence from the Bible.

    • @ifyouseethisusernameyoumus1405
      @ifyouseethisusernameyoumus1405 Před 4 lety +1

      @ACHO I have so many verses that prove that you're wrong, not just John 1:1.
      John 1:1
      John 3:16
      Colossians 2:9
      John 8:58
      John 10:30
      John 5:17-18
      John 14:6 (He created life, and he is life.)
      1 John 5:7
      1 Timothy 3:16
      Not only did He claim to be God, but He also claimed to have the power of God. He said He has the authority to judge the nations (Matthew 25:31-46). He claims the authority to raise people from the dead (John 5:25-29) and to forgive sins (Mark 2:5-7)-things only God can do (I Samuel 2:6; Isaiah 43:25).
      Now, where is your proof that Jesus isn't God?

    • @wildbill8362
      @wildbill8362 Před 4 lety +1

      And, a math video went into a discussion about a cult....hahahahaa

  • @khaleelhummeid7878
    @khaleelhummeid7878 Před 5 lety +1

    You are number one, I wish you could tutor me? Mr. Robert I watched your online classes before I had my GED and now I'm in my second semester in College. I really need help, my math teacher is all over the place sir, she flies through the materiel! Please help me sir?

  • @tanedgar779
    @tanedgar779 Před 5 lety +5

    If there were a few hundred million of you every single student will be so much happier

  • @oliviacunningham6764
    @oliviacunningham6764 Před 4 lety +2

    Thank-you your explanations really helped me understand better! I'm gonna say something random now, you sorta look like my dad and I'm a little freaked out lol

  • @2zero.6
    @2zero.6 Před 4 lety

    If u where my teacher Id Be SO HAPPY TO come to UR CLASS EVERY SINGLE DAY OMG THIS IS HOw Kids Will Learn MAth U have to have the right teacher OML We Need Ppl Like u in math classes

  • @hewwothere3862
    @hewwothere3862 Před 6 lety +3

    I wish we got teachers like you in our schools :D

  • @jessicanaidoo1307
    @jessicanaidoo1307 Před 4 lety

    Hi Sir. How would you work out an inequality that has two inequality signs? For example: 2x-5>3+5x

  • @aviationnation5997
    @aviationnation5997 Před 5 lety +2

    A good teacher=Happy learning students
    Thanks Yaymath!

  • @ButtChinsAreHereToStay

    A great introduction to this topic and I love your sense of humour. Many thanks.

  • @gregorytrane7828
    @gregorytrane7828 Před 3 lety +1

    It's sad that I can find better math and science teachers on CZcams than in the colleges and universities that I graduated from. But at least they're more beneficial to all who are interested in the pursuit of higher learning.

  • @user-rs8fr1wx7n
    @user-rs8fr1wx7n Před 3 lety

    I'm from SA 🇸🇦🇸🇦🇸🇦I love your explain 🥰❤️....continues

  • @jbutler2005
    @jbutler2005 Před 5 lety +1

    This guy is the best

  • @bricktothehead
    @bricktothehead Před 4 lety

    Thank you so very much. I watch a lot of your tutorials. I see a lot clearer mathematically

  • @soulofallin06041978
    @soulofallin06041978 Před 5 lety +7

    Oh i got 49 out of 50 because of this video thanks

    • @RaidsHim
      @RaidsHim Před 4 lety

      sheetal shetty s I like your lies

  • @WeedArtz123
    @WeedArtz123 Před 6 lety +4

    very helpful for my maths test in 2 hours thx you

  • @khalidbornaparte6250
    @khalidbornaparte6250 Před 5 lety +1

    Thank you Robert.

  • @jessycorona4599
    @jessycorona4599 Před 3 lety +1

    i went into inequalities very confused but this has helped alot thanks. Just need to pass my Math GED Test and ill finally get my GED. Thanks alot sir.

    • @yaymath
      @yaymath  Před 3 lety +1

      You will. It’s inevitable.

    • @jessycorona4599
      @jessycorona4599 Před 3 lety

      yaymath passes my math GED test. Got my GED thank you wouldn’t of been possible without many of your math videos.

  • @BTSARMY-el8no
    @BTSARMY-el8no Před 6 lety +12

    Is this actually going to need in life other than passing tests

    • @thegoodlydragon7452
      @thegoodlydragon7452 Před 4 lety

      If you have a job that requires you to think rather than simply move you body, whatever that job is, understanding how to think systematically is always beneficial. Likewise if you go into any natural science or engineering, then algebra itself will even be directly relevant to your work.

  • @juliet8314
    @juliet8314 Před 5 lety +4

    Yay math yay math yay math thank you!!!!!!💥✔✔✔

  • @daisysamson9498
    @daisysamson9498 Před 5 lety

    Hey yaymath I have question for you .Is there another way to solve LCD inequalities in short way?I got headche on it.

  • @abdulahad2298
    @abdulahad2298 Před 5 lety +1

    You are a legend

  • @schefontagosserand2663
    @schefontagosserand2663 Před 2 lety +1

    Best way to explain it outstanding!

    • @yaymath
      @yaymath  Před 2 lety

      I’m so happy you understand so clearly.

  • @ignaciomz12
    @ignaciomz12 Před 6 lety +4

    you are awesome unlike my teacher i can actually understand you

  • @wendolineurbina8812
    @wendolineurbina8812 Před 4 lety +1

    your are a great teacher

  • @Princess-iy1hm
    @Princess-iy1hm Před 4 lety +1

    thank you so much!, you are very helpful, I wish you were my teacher

  • @raymondginn8085
    @raymondginn8085 Před 5 lety +2

    He is great! No, in real life, you probably will not use !0% of this in real life (unless you go into some discipline that calls for it), but what it really teaches you is how to reason things out.

  • @blacksnow8070
    @blacksnow8070 Před 2 lety

    This is embarrassing but I'm a grade 12 student who never really understood the whole sign switch assignment. I think i get it I'm not sure yet I'll have to do some questions myself BUT I do have a doubt, For trying to balance out fractions can we take LCM of both sides?

  • @chucklewhuckle
    @chucklewhuckle Před 4 lety +1

    You are the Bob Ross of math

  • @charkbrister9004
    @charkbrister9004 Před 2 lety

    I would have loved a math teacher like that

  • @joanlynch5271
    @joanlynch5271 Před 6 lety +1

    Love yay math!!

  • @nikisawyers7559
    @nikisawyers7559 Před 2 lety

    You say “burn through these” but inactuallr need someone to break it down slowly. I’m having such a hard time, and I cannot get into college without this class.

  • @jamealroach2319
    @jamealroach2319 Před 7 lety +1

    You those seems much easier, thank you

  • @richelledelacruz1172
    @richelledelacruz1172 Před 7 lety +1

    This is my favorite tutorial.

  • @Bella-qr4ry
    @Bella-qr4ry Před 4 lety +1

    4:51

  • @atlas1936
    @atlas1936 Před 5 lety +2

    Thank you so much I missed my math lesson for today and I had homework and I was completely lost

  • @Apple-mm7pb
    @Apple-mm7pb Před 5 lety +1

    thank you so much *brother*

  • @Citlalminaa
    @Citlalminaa Před 7 lety +2

    I dont understand, when he multiplyed 4 to both sides of the fraction, why did it become a 2, on the fraction to the right? And couldnt you just make the fractions have a common denominator and then solve?

    • @tuxedo2037
      @tuxedo2037 Před 7 lety +1

      It became a 2 because 4 divided by 2 is 2. Even if you made the denominator the same (like 4) you will still get 2x - 6 > 2x-6 which cannot be solved

  • @fauziashaikh8666
    @fauziashaikh8666 Před 4 lety

    The way you teach 😍👏👏👏
    Hats Off Sir...!!
    U made this stuff a lot more than just simple

  • @ismaelsumbal2308
    @ismaelsumbal2308 Před 5 lety +31

    Who watching in 2019

  • @yaredtadesse8470
    @yaredtadesse8470 Před 4 lety +1

    yo thanks for the video i understand it now thk so much again

  • @Geo35868
    @Geo35868 Před 5 lety +1

    thanks this is helping me

  • @kimcarthew2697
    @kimcarthew2697 Před 3 lety +1

    I love your video, it really funny kim

  • @KaturahBrwn
    @KaturahBrwn Před 7 lety +1

    your amazing love the teachings

  • @zephyr1327
    @zephyr1327 Před 4 lety +1

    0:10

  • @FakeAccount
    @FakeAccount Před 4 lety

    in an inequation like 1/1-2x > 1/2x+3, why can't I just raise both sides to -1 so I can get 1-2x > 2x+3 ??

  • @jacksonmulcahy
    @jacksonmulcahy Před 4 lety +2

    13:00 Me: Larger! Him Literally a second later: Correct! Me: ._.

  • @somniato7759
    @somniato7759 Před 4 lety

    Wow you're actually a fun teacher

  • @user-bt2yl7jc9m
    @user-bt2yl7jc9m Před 3 lety +1

    You are awesome!

  • @cesarc.3095
    @cesarc.3095 Před 6 lety +1

    Thank you so much man 😭😭

  • @davidwright8432
    @davidwright8432 Před 5 lety

    This is far too easy and clear to be math! thanks.

  • @accessmathtutoring
    @accessmathtutoring Před rokem

    Excellent ! ❤👍

  • @user-sx5uu2xq3t
    @user-sx5uu2xq3t Před 3 měsíci

    U are absolutely awesome

  • @obsessedgamer6218
    @obsessedgamer6218 Před 5 lety +1

    You are indeed weird and funny.
    Love you weirdo 🤗🤗🤗

  • @vitoamos2815
    @vitoamos2815 Před 4 lety

    Brilliant !

  • @hemantsgaming3861
    @hemantsgaming3861 Před 5 lety

    Really good video and explanation👌🏻

  • @yaredtadesse8470
    @yaredtadesse8470 Před 4 lety

    i like people that are interactive and this video was great

  • @jellasumangit4152
    @jellasumangit4152 Před 4 lety

    Thankyou so much 💙

  • @snarfoo1
    @snarfoo1 Před rokem

    Thank you!!!

  • @zuneranoor3653
    @zuneranoor3653 Před 3 lety

    Waooo excellently explained 😳🌹

  • @nucleus7896
    @nucleus7896 Před 6 lety

    great video!

  • @dheemaanmehta5037
    @dheemaanmehta5037 Před 7 lety +30

    I wish u where ma teacher

    • @tuquyento4322
      @tuquyento4322 Před 5 lety +1

      Hello Dheemaan Mehta What class are you in?

    • @davidwright8432
      @davidwright8432 Před 5 lety +2

      But wait! He is! He just taught you - and me! - something.

  • @aliciasalazar7237
    @aliciasalazar7237 Před 7 lety +2

    your the best

  • @sageperez2100
    @sageperez2100 Před rokem

    thank you so much

  • @thatsokay6446
    @thatsokay6446 Před 5 lety

    This really helped me thankyou

  • @jamilrehman8256
    @jamilrehman8256 Před 2 lety

    May God bestow showers of blessings upon you....

  • @user-xl8xc6mr7m
    @user-xl8xc6mr7m Před 5 lety

    Thank you sir, good stuff.

  • @khulud9972
    @khulud9972 Před 4 lety

    I wish that you were my teacher,thank you soooo much

  • @kimcarthew2697
    @kimcarthew2697 Před 3 lety +1

    I Wish you had been my teacher at school, l would have learned a lot more Kim

    • @yaymath
      @yaymath  Před 3 lety

      Thank you for your sentiment. At least we have "CZcams University" together.

  • @saraeatsmovies
    @saraeatsmovies Před 5 lety

    thank you kind sir

  • @elsielopez4365
    @elsielopez4365 Před 6 lety

    Thank you !

  • @madelinerincon9628
    @madelinerincon9628 Před 5 lety

    I learned so much thanks 😢😭

  • @morislavamedina8096
    @morislavamedina8096 Před 4 lety

    Thanks