Introduction to graphing inequalities | Two-variable linear inequalities | Algebra I | Khan Academy

[@CruuushaL]

y> dotted line/shade up y>- solid line/shade up y< dotted line/shade down y

[@kaitleentolentino]

Thanks for this, this helped a lot (:

[@CruuushaL]

Kaitleen Tolentino No problem ;)

[@NerdyGuy142]

SoluriZe thanks

[@nanc2236]

SoluriZe is this 100% true? Or sometimes not

[@wale7342]

it only applies for when it is in slope intercept form, if it is in standard form for example you have to use a test point

[@hadassah___9929]

Definitely the type of video you watch after actually going to class.

[@Gabi-pn1fw]

How'd you know

[@uxhud7823]

I'm watching in class.

[@rldv634]

I just woke up from

[@Mail-ke3kj]

Dude same

[@jamshidbekjr.2529]

this video is 12 years old. And it is still helping many people to improve their understanding of inequalities and their graphs. Brilliant work, Sal !

[@happyface958]

Speaker:"This is the hardest part" Me: Isn't everything hard? What?

[@stevelarry154]

lol manual labour is hard

[@poopyboopy1157]

EXACTLY

[@Mustafa_Khan]

There are two ways that a person can close their browser after watching this, either understanding everything, leaving a like, and stating how much the video helped in the comments, or you can leave more confused than ever and fail your math exam that's in 2 days. I'm in the first type, thanks Sal.

[@urfav_julezz]

i’m the second type bro i am not passing any math tests 💔

[@Mustafa_Khan]

@@urfav_julezz good luck fam, check organic chemistry tutor, he's good too

[@nev8293]

For the past week I haven’t understood a single thing in math. I have a test tomorrow and I was freaking out because I didn’t know how to do ANYTHING. this video helped me a lot!!!

[@XdgamehackerXd]

I love how it takes a teacher 45 minutes to an hour to teach what you taught in eight minutes

[@therealmistermemer]

My teacher is making us watch this in online classes lol

[@stevelarry154]

because he's from MIT

[@Sohlstyce]

i love how people say "i love how" even though they dont love it.

[@pc5890]

@@Sohlstyce I love how you said I love how people say I love how when they don’t actually love it

[@Megandalil]

I’m sorry am the only one trying to learn how perfect this guy writes with a mouse?

[@stevelarry154]

in his book he said he bought a drawing pad before starting the academy

[@shivrammohan9081]

It's a graphic pad boy

[@blackumbrella6199]

@@shivrammohan9081 Nah, it's a painting pad.

[@user-yo7dr5zv5q]

its probably a drawing tablet

[@poopyboopy1157]

IKR

[@nataliekolano9603]

This guy has helped me through so many math classes, it's unreal

[@syedtehnanathar3195]

yeah didnt understand a single thing

[@Runway_Runaway]

S. M .T same

[@sirsmoothable]

Lmao

[@ompatel9971]

S.M.T THE BEST COMMENT

[@pluffy5490]

Thats easy.. How can u not understand that

[@majorenkova]

Same

[@JustinK0]

This is so much simpler than the graphing inequalities my teacher was doing, not sure how anyone else can have an issue, its pretty straight forward

[@jamsforsale6767]

4:44 *TO PEOPLE WHO DONT UNDERSTAND:* Basically, he's saying shade the bottom half of the boundary line because all of the solutions are less than () 4x+3 (y=4x+3) you would shade the top half

[@DANIELDALLAS_MATHs]

Or use vise versa : it depends on technique used to select the target region. For example here is an opposite technique kzbin.info/www/bejne/Y5e8p5J7h56Bd5o

[@journeywarner6889]

your straight line standards are high!

[@HarrySia]

good morning fellow reader! is ur lucky day, im gonna tell you a legit shortcut on what to shade after you graphed the linear iniquality if y is on the right ex: y

[@laneymck3068]

Harrykyle99 THANK YOU SO MUCH

[@HarrySia]

laneymck glad to help

[@labeedahmad5148]

Thanks bro it was more helpful than the video

[@kawosdhdos]

thats a bad method because if you just copy this, it shows that you dont actually understand whats being done here and why you should be shading something. The best way to get good grades is by actually understanding the subject.

[@leslieramirez4748]

you just confused me even more...

[@zurijacobs2442]

leslie ramirez same 😂😂😂😂

[@zurijacobs2442]

same

[@nameesamin7914]

me too

[@slurp3194]

you confused yourself he just turns everything into bare bone using logic tbh u are hopeless if u dont get this

[@saifulrafie5169]

😂😂

[@scatterbrain_jane]

A week in my class and I didn't understand a thing. This saved me. Thanks guys!

[@poopyboopy1157]

YOUR WELCOME

[@kittenpimath]

Khan you are AMAZING! Every time I want to learn something about math, all I have to do is search x plus khan (where x is the thing I want to learn) and BOOOM! Twelve or so minutes later I know it.

[@JavierTorres-eq5to]

Everything is so much clearer now! Thanks, Sal!

[@extrememinecraft29]

Thank you, you made math fun

[@realdvgarg]

Everything is Fun. it is just a matter of precedence.

[@diegojosesoriano]

Yeah thanks. More confusing than ever.

[@cat3394mc]

OMG Thx Im reviewing for a semester exam and I forgot how to do this

[@fuse2103]

Thanks sooo much!! This helps loads, I finally can understand what i am doing!!

[@roguephilosopher2465]

it really does help.

[@poopyboopy1157]

NO IT DOESNT

[@omniaali3093]

what if there was a number before the Y? such as 2x+4y>7

[@nanc2236]

Omnia Ali you divide every number by the y value

[@revenge-q5s]

u rearrange to formula to the general form y=mx+c

[@realdvgarg]

yes u are correct my boi.

[@jasminemm6252]

Make y the subject

[@tihainaaana5133]

Thanks Sal! i never kind of lost my attention during the class.

[@poopyboopy1157]

I LOSE IT ALL THE TIME

[@jessicalynn4415]

What's interesting is that I'm a math teacher and I thought that this explanation was perfectly clear, but I'm reading the comments, and it looks like the commenters who are students are still confused. I will definitely break this down a little differently when teaching it.

[@itspjgames]

11 year old videos are still useful

[@graceann147]

The video seems a little bit confusing at times but I'm pretty sure I got it thank you!!!!

[@poopyboopy1157]

YESSIR

[@conzpicuouz]

people who don't understand sal just doesn't understand math

[@lavendar-skies]

haha i really dont understand but i like aot :p

[@Darkhero-ue4hl]

Attack ON TITAN!!!! WOERMFKOERMFOERKQWMFOWEMRFKOMERFKERF

[@cocoa1996]

Why doesn't the downvote work?

[@Runway_Runaway]

Victor Zhang yeah i dont understand it i have a 51 percent in my class

[@Ok-vr8fu]

isn't that the reason why we're watching this vid to begin with?? So that we'd understand :l

[@bathaniekoli359]

i love this guy

[@InfamousTub]

People who say he’s confusing you need to realize the only reason you’re confused is because you’re missing necessary understandings of math.

[@shuaebahmed8353]

Or there reading the comments and not focusing

[@abbylazewski7337]

i have to take my alegbra 1 keystone exam in about 2 hours. NOT PREPARED AT ALL. Thank you!

[@tonybrown385]

Can u do one on how are Equation and inequalilty alike

[@DANIELDALLAS_MATHs]

Hi! I didn't watch but you may try my explanation, it might work for you! kzbin.info/www/bejne/Y5e8p5J7h56Bd5o

[@thelittlehero7597]

hello for everyone who didn't understand im going to explain it here clearly y = mx + n it refers to the position we start on the graph if we have n to 3 we start from 3 on the y vertical line now if m is 2 from the point we started we go 2 points up so we will be on the y =5 and one verticaly so x = 1 then y 7 and x 2 , y 9 then x 3 if m was -2 we would start at 3 and go down 2 verticaly and 1 horizontali y 3 x 0 then x 1 y 1 then x -1 y 2 ... now if x was 1 over 3 x that is a fraction and we start y 3 x 0 we would go y 4 x 3 then y 5 x 6 and so on for minus we would go down i hope this helps

[@poopyboopy1157]

THANK YOU

[@casey3760]

This guy taught me more in 5 minutes than my teacher did in 5 weeks

[@poopyboopy1157]

FACTS

[@MsQuinn-cv1pi]

Finally.. math in plain English. Thank you.

[@paletapayasofan]

ok this just made things even more confusing

[@Fatimaurl]

This was extremely confusing🙁

[@DANIELDALLAS_MATHs]

Hi! I didn't watch but you may try my explanation, it might work for you! kzbin.info/www/bejne/Y5e8p5J7h56Bd5o

[@buythemozzarella7128]

thank youuu, my chances of failing my math test has decreased after watching..I hope. 😁

[@fatimaalmansoori8693]

Thank you so much! I can clearly and fully understand graphing inequalities. Best youtube Math channel.

[@poopyboopy1157]

NOPE, 10 YEARS AGO GEEZ.

[@HarshGames]

The fact that people still don't understand... it just mind boggles me. You can't get a better teacher than Sal.

[@poopyboopy1157]

THAT IS SUCH FACTS, HE NEEDS TO BE MY ALGEBRA TEACHER.

[@anguslarsen4282]

Helped a great deal, thanks!!

[@poopyboopy1157]

YOUR WELCOME

[@LidasB]

Great one!

[@selenayoung9771]

this didnt even help me one bit !.. it just confused me even more :(..... Thanks

[@mathconuniverse4962]

Come and check out my videos. I guarantee that you will understand this topic the way I teach it. Subscribe if you do as well.

[@Geo-fq7td]

this is great, thanks, I found it just in time, right after my finals its 12:39 :(

[@tropicalb3ar268]

I just wanted to say thanks for this bc it did help me understand the concept in a way, ik the creator might not see this but if you doooo then thanks honestly I would have failed school if these videos were never made lol

[@poopyboopy1157]

THE DOOOOO

[@omuomu0220]

Thanks this really helped.

[@relanceli9664]

much easier to understand than my teacher in school... thx

[@ritvikyessirr]

hows life bru

[@Brainboosterinstitute]

sir ,good explaination,but in short we can directly substitute (0,0) to find feasible region of inequation instead of substituiting all the values i.e -1,1.if inequation gets satisfaction by origin ,its feasible solution will be on side of origin or else another side .

[@poopyboopy1157]

ARE YOU IN INDIA, IF YOU ARE THATS COOL.

[@lillysmith1886]

THANKS I GOT AN A+ ON MY TEST

[@Kung223]

Thanks! This was helpful

[@jasztakata25]

Thx for the second equation b/c I have really bad trouble on that one. Now I understand it more easier.

[@poopyboopy1157]

YUP

[@unanimousburden6930]

really helpful you make it seem so easy

[@poopyboopy1157]

I KNOW RIGHT

[@jameskilzer2908]

This was very helpful, thank you.

[@poopyboopy1157]

OK BUDDY

[@cobraunit66]

What I'm so confused!

[@Chelsea-xu6ve]

thank you so much!!!! although I'm still confused about some things, this video helped me out alot

[@poopyboopy1157]

NOT ME

[@gloglogo2638]

I think I have it now! I was plotting correctly and using the dash and solid lines. But when it came to coloring it in on the computer it would not work. I think I was coloring the line too or not going above what was included. Still a little tricky.

[@poopyboopy1157]

I DONT UNDERSTAND

[@suhailbakr]

Insane! I am watching 2021 videos the same guy is doing the same stuff. but wait! his sound have developed .

[@namraaah271]

ThAnk you…..life saver pretty much

[@saadlakhbab6739]

It helped a lot

[@TheAudience100]

helped a bit, but you were teaching things backwards!

[@spokes783]

This video is good. I don't know why people are getting confused.

[@khalilomar6364]

ty ur videos really save me alot.

[@Lea.350]

Thank you Mr khan 😩

[@稲川-h8r]

It's was really helpful :) thanks =D

[@poopyboopy1157]

нщгк цудсщьу

[@roguephilosopher2465]

understood everything, thanks Khan

[@poopyboopy1157]

RESPECT HIM G, HIS NAME IS SAL

[@SofiaAbadd]

sal i love u if i get into uni its thanks to u

[@therealhan21]

All these math students in the comments that are complaining should just work harder. SMH.

[@DANIELDALLAS_MATHs]

Yeah, you are right, for example passing NCERT :)

[@jec8303]

Thanks Khan 👍

[@clinthbuton1924]

"And hopefully it will look dashed to you". HAHAHAHA LMAO

[@yzana7513]

This is very helpful i think

[@gabrielhoffman8281]

This was very helpful

[@mellow9343]

1:22 Why do you go one in the x direction? Where did that one come from? Is it because 4-3 is one? I'm confused help :(

[@kawosdhdos]

we go in the one direction because youre supposed to graph the point. After you graph a couple of points, you graph or connect them to make a line. Why are you supposed to graph a line? Because this is math class.

[@zamdwa7084]

Love you khan academy!!!!!

[@HaileyGilliganHaileytheGamer]

THANK YOU THANK YOU THANK YOU!!

[@anthony2824]

Very helpful thanks alot

[@tihainaaana5133]

This is helpful! Thanks!

[@poopyboopy1157]

ONG

[@jamesryebread8318]

didnt help at all, just confused me more. Thanks....

[@2Lip97]

omg thanks to you...immma pass my test THANK YOU!!!!!

[@bekham.3015]

what if the equation is -y

[@tryingwiki8437]

Rebecca McKay same

[@bekham.3015]

Trying Wiki when do u use stippling instead of shading in the graph

[@quise5751]

*divide both sides

[@AveryCoolKid]

*insert prodigy leveling up sound*

[@deaa7606]

this is great

[@sankalpyadav8981]

Thankyou 😇

[@haksfldfld5474]

i found this helpful

[@carmelaao]

Hi, what if the fraction is positive? Is the slope descending or ascending?

[@poopyboopy1157]

CARRY THE 1

[@aswmdude24]

Was not confused at all. Great explanation ! Well Done :)

[@poopyboopy1157]

YOUR BEING SARCASTIC, RIGHT!

[@therealworlduploads]

ikr@@poopyboopy1157

[@Benjamin-lq1sf]

1.5 speed is a life saver when you have to watch a lot of these

[@JoshuaVanRooyen-j7o]

Where did you get the one on the X line of the graph

[@saadlakhbab6739]

I love math

[@useurcamera]

This is mostly going to be useful for engineers(at least I know it will)

[@poopyboopy1157]

YUP NOT FOR ME

[@poopyboopy1157]

YUP

[@joshuaonyango4183]

nice...... understood

[@graceann147]

Thank you!

[@Chris-gf7ke]

hi classmates from nativity i dont understand this at all

[@bangmingo2855]

awesome thank you!!!!

[@queeny5613]

Thank you so much

[@Boardwoards]

THANK YOU.

[@salmansaadiqp]

Thank you

[@shotarojaeminsummerfight6076]

what if the given is the shaded graph and youre supposed to find the inequality?

[@aidan_sterlingg]

6:12 shouldn't the line be dotted?

[@compbuilldz6668]

Watching in 2018

[@Sir-Kino43]

february!

[@jadconn2554]

these videos are really helpful, but i just wish that u taught it as if u were teaching it to the correct age group. if we are learning graphing inequalities in school, we would already know what an inequality is, and how to graph. the only people who would need u to explain that are the kids who do absolutely nothing in class and have a important test the next day, and there is really no point in helping them.

[@hgg219]

I think your wrong, you should help everyone.

[@jarrethcutestory]

So you are the kid who does nothing in class and there is no point helping you? Is that what you're trying to say?

[@jiminiekricket9497]

Excuse me, I'm homeschooled so this is really helpful for me in completing my work and actually learning ;Just so you know I have no choice but to be homeschooled