Algebra: Equation of a line

[@teaonabag]

my math teacher blabbered about this for about 40 minutes wit hstuff, that you shouldn't do and stuff, that would lose you points on your test.... This took me less, than 7 minutes time and I got the calculations from my book done... such huge thanks for that.

[@M0u5eCl1ck3r]

You taught me more maths in 6:45 minutes than my Maths teacher has taught me in two weeks. WOW! Thanks Khan Academy

[@kris-yg9om]

2019 anyone ? It has been 14 years since this was posted!!,

[@rakata1987]

13*

[@Rats-mhb]

15 noww

[@rowanwatson5254]

it just hit me that 2006 was 14 years ago....jesus

[@Ztingjammer]

2020 here :D

[@dhruvakikkeri6217]

Hey its 2020 :)

[@IndieGirl10100]

So to clarify: finding m: y2-y1/x2-x finding b: use y=mx+b (but plug in m into formula & the x and y given already).

[@WilliamFordRoom340]

IndieGirl10100 Yes, and you can use either of the two points for the X and Y values, but you have to use both values from the same point.

[@FrenchToastyBox]

I don't get why I have to listen to my horrible teacher, when I can just sit my butt here, learn at my own pace, and actually understand this stuff! Thank you, KZbin.

[@CrimsonBlood0357]

Yes I agree

[@fennekin2292]

bad quality, but a great help! EDIT: didn't realize it was posted in 2006 :P

[@ch4mp10np4p1]

hey in 5:58 i dont understand how did 5 become 25 did u multiply 5 by the denominator 5 if yes why didnt u add it with 33 pls help im currently failing on math

[@raniafaraz5979]

Fennekin 22 almost 14 haha

[@1O1neTake]

@@ch4mp10np4p1 hey man did you pass?

[@ch4mp10np4p1]

@@1O1neTake i did thank you

[@1O1neTake]

@@ch4mp10np4p1 nice

[@JAJE3U8]

Oh man. Old school KZbin. Memories.

[@nightmork9943]

h man. Old school KZbin. Memories.....

[@da40128]

This was recorded nearly 9 years ago!!

[@ChiChaChiHa]

10 now...

[@alexandermoltz5089]

Coming up on 11...

[@adrianv3073]

11 years today

[@aebfhinn9679]

Dawid Stasiak 11 now!

[@gregoryyang8988]

More like 12 now.

[@AFIGHTCHANNEL]

Khan is a straight G.

[@Zohirul-Jewel]

+AFIGHTCHANNEL What do you mean by straight G?

[@ChiChaChiHa]

+Zohirul Islam Jewel He means that he is capable of great power! :)

[@nathalieolivan8170]

OMG THANK YOU SO MUCH, I NEVER UNDERSTOOD THIS IN HIGH SCHOOL, OR IN MY COLLEGE ALGEBRA CLASS.

[@Vv-fy2dl]

Broooo this was 14 years ago🤯 I wasn’t even born then

[@dg787]

I was like 7 months old

[@ginni3391]

I didn’t even exist yet...

[@avinswildadventures4975]

Same

[@f-almessabi2602]

@@dg787 same

[@bobbyentertainer5575]

@@f-almessabi2602 i was 10 months old

[@ajhedlind721]

this helps me so much i am in 7Th grade and i am failing math and this is helping me raise my grade thanks so much now i know who to watch when i am failing.

[@taanisharora5577]

Today is November 22, 2020. This was uploaded on November 22, 2006. Crazy!

[@sesshysayoyasha93]

Thanks a lot! This video gave me a more intuitive feel for line-graph problems!

[@hayleygibbs520]

I love khan academy, but I cannot believe this vid was made in 2006!!! 💗Very crazy

[@saminornob1737]

Best Explanation Ever. Thank you Khan Academy

[@pseudohawk1656]

KhanAcademy rocks in explaination. Old video but still the bes

[@pseudohawk1656]

best*

[@riana2204]

you should have explained more about how you were getting the answers but it was very helpful! thankyou

[@omarshelby3732]

ily man simple video not long low quality bcuz it was 15 yrs ago but its unbelievably perfect

[@IdleTime1001]

Gotta Say Man, that Really helped, very easy to understand now, thank you

[@shekelboi]

Khan Academy never fails to help me.

[@MSFR-911_]

سبحان الله وبحمده سبحان الله العظيم استغفر الله العظيم الذي لا إله إلا هو الحي القيوم و أتوب إليه سبحان الله وبحمده عدد خلقه ورضا نفسه وزنة عرشه ومداد كلماته اللهم صَلِّ وسَلّمْ عَلَى نَبِيْنَا مُحَمد ﷺ

[@bakayarau09]

Thanks 😊 Khan Academy!!!!

[@koulamit]

I am a biology student, so i dont understand much of co-ordinate geometry, i was trying to understand this god damn equation for more than 4-5 hours. WHen i saw ur video, i didnt have words to thank you.......u r a life saviour!

[@leoDvincci]

Because the line formula is "y=mx+b" 11/5 = the slope -3 = a point on the line on x axis

[@BangMaster96]

This was made 13 years ago, crazyyy

[@ginni3391]

14 years now 👀

[@roarmaster2]

this guy is a genius

[@mastermatt568]

thnx so much! I forgot my text book, and have a quiz on this tomorrow!!!!!! So thnx again!

[@kurdish2000]

This video was uploaded 14 years ago, and now i am 14 watching it, wow

[@pessimisticegoist6443]

Thank you for uploading this, you have no idea how much help this is- I hope I don't bomb my math test! ^^

[@johndumaguing5978]

Huge help

[@klairehoang667]

hands down the best thing to do in self-quarantine: a math marathon

[@SonOfBangali]

hi, i would really appreciate if u made some of the hard math videos in bangla only with your voice over... thanks

[@Takyura9]

OMG! I will have a quiz about this in the morning. You help me a lots, I love you!(just a joke^^) I think watching your video is better than reading my thick maths book. {p.s:I know my eng grammar is poor, sorry~ I still learning eng hard & hardly, orz}

[@fefeliciouse]

omg ty im sure to pass my test

[@pinkdog86]

this guys is hilarius.. "ah my fone is ringing let me turn down the volume" lmao awesome =D

[@gothicreader]

Because -11 is x and 5 is y. In other words, you would graph x=-11 and y=5. Now, if the answer was 2/4 then you would reduce to 1/2 and graph either number and now that each point would be on the line. I hope this answered you question.

[@payasitopimpim2002]

great excellent my friend.................

[@jason9875]

Thanks this video helped me

[@Ohmz27]

Lol, why didnt he use that straight line tool to draw the axis xD Only critisism from me lol. My maths teacher will mark u a grade down if u hand in homework and its messy the slightest. Great video though! I was never taught this stuff in GCSE. Now i do A-Level maths, 2nd week and my teacher is saying we should have been strong on this from GCSE o.O.. Really dont wanna fall behind cause of the 'simple' stuff haha. Thanks for the vids man, your a real help!! !

[@mariadanisor9540]

love this. thanks a lot

[@chasecolin22]

@aero1927 yes follow the equation y2-y1 over x2-x1 and you should get 2/3 as the slope hope that helps =)

[@fdxnaoseinomes]

I need this to do an exam of 10º, thanks

[@Chilloutmikee]

Video was uploaded 13 years ago wowwww

[@lisinka3]

With the way you teach, 1st graders would get this. Btw, in what grade should kids be learning this?

[@simplytamagotchi153]

8th grade

[@alirezaadineh4133]

Thank you 🌹❤️

[@spyrolatro]

@uns33ntr4th They don't represent anything except that Y= Vertical line and X=Horizontal line. X and Y are used normally to represent unknown numbers, or as i told the axis.

[@bloxtonreports6293]

I look away for a second and the whole periodic table has been written

[@RedKyojin55]

I swear it’s mx+c

[@riyakumar757]

it’s interchangeable. really depends on where/when you learned.

[@pega1300]

its basically American

[@SheikAbdulAzizBinBaz]

Depends on in which country you are For me its ax+b lol

[@emilhales2705]

for me its y + x - m * (42 sqrd) * sqrt4

[@isthisit15]

I thought I was pretty smart when I already knew the formulas and answer! but I calmed down when I realized its simple eighth grade mathematics!

[@Exxodus28]

@aero, are you referring to this line or if you have those two points and need to find the equation?

[@moneyguy258]

omg thank you so much! i had honors for algebra and my teacher doesnt teach me anything and i failed the math course so now i have to repeat again next year :/

[@whoosh-su9ss]

i wish he would’ve explained why he only multiplied the numerator. and why it became 5-33/5. but ofc a full comprehensible tutorial is too good to be true isnt it

[@rubikskidcube]

thanks alot dude

[@devSaturnine]

thanks, helped a lot.

[@yeet5901]

wow i find this comment 13 years ago wow

[@jerfersonmatos28]

Alright for those who didn't understand I've made a playlist with his fractions lessons, so go to my channel and you will see the playlist with his videos. But you will have to learn about equations as well so I'm gonna make another playlist of his videos about equations and equations with fractions.

[@aliaatarek7106]

Glory 🔥🔥🔥💝

[@darkandlight54]

I think m and b are just random variables that people use. In Singpore we use y = mx+c

[@valeriekubiak9035]

Is there a video I can watch that explains how exactly he turned "5 = -11/5 (-3) + b" into "b = -8/5"?

[@nycetomeetyou]

I'm sorry but aren't you supposed to use Two-Point form which is Y-Y1= y2-y1/x2-x1 (x-x1) ?

[@taitaizozo]

To find the equation of the straight line in any form we must be given either: two points, (x1, y1) and (x2, y2), on the line; or. one point, (x1, y1), on the line and the slope, m; or. the y intercept, b, and the slope, m. In the first problem, we were given two points. This guy was probably doing the rise/run equation to find the slope-intercept form. Not that it's necessarily wrong, just wrong situation.

[@dncls5112]

@shinigamirenegade the 5 in 5-33/5 is the same thing as 25/5, then 25/5-33/5 is the same thing as (25-33)/5 sorry i cant do real fractions on my computer

[@CloudNine201]

i need to do this for my homework, please help!! A triangle has vertices A(3,-2), B(2,-14) & C(-2,-4). Find the gradients of the straight lines AB, BC & CA. Hence prove that the triangle is right angled.

[@Qixo_]

Bro still hasn't got any help 10 years later

[@paiges6251]

Where does 25 come in???????

[@DaR3ALAWESTSIDENXT33]

He is making 5/1 have the same denominator to -33/5 (so they have the same denominator, and that means 5/1 = 25/5) thats why, at least thats why I think he did that

[@juniabrun]

paige s im wondering the same thing

[@xogmaster]

Precisely. In order to add or subtract fractions they must have the same denominator.

[@aliciamckenzie4527]

ok thx

[@dawuanerhodes9868]

Done

[@anthonyguitron6741]

hope you have fun!" really

[@KARAN-gd6rv]

nice video quality now i can seee clearly everything

[@ShanyBoy-2cc]

Bro this was 17 yrs ago

[@iplayergirl14movedtocjanim95]

how about the formula is different like this= m=Y2 - Y1 over X2 - X1?

[@SathvickSatish]

IPlayergirl14 Gaming It's the same

[@SathvickSatish]

IPlayergirl14 Gaming you just do it a little bit differently

[@koulamit]

five stars arent enough i give u ten stars!

[@MSFR-911_]

Thx

[@0mer870]

Slope in Arabic is "Mayl" , hence m (meem) makes sense.

[@Tylernmrn]

what happened at 5:54 where did the 25-33 come from did you multiply the two fives/

[@Simply.sojourners.]

when you have 5= -11/5 (-3)+b and you go to 5= 33/5+b why do you multiply the -11 and -33 but not the 5? in other words why is it 33/5 and not 33/-15?

[@amirorfiana4531]

been a decade since this video was uploaded

[@tangebean6249]

I was in my mother's tum tum when this was posted. I feel kind of old.😂

[@nocturnalvisionmusic]

That's okay sometimes I do too 😁 I was six around this post though 😇

[@Sid_Y]

Come to my school and please teach my math teacher how to teach!!!

[@purplepick1]

I love you!! thank you!!!!

[@bloxtonreports6293]

Bet you forgot about this comment

[@speedyandshadow]

ok does anyone know how he got 25 towards the end of the video. did he multiply the 5 with the denominator of 33 over 5

[@fahadalharbi1465]

guys , I am good until 2:18 , it is equal to 2/2 , why is m = 1 ? , could anyone explain that to me :(

[@tugger]

2/2 is one! it reduces!

[@unknownarmy3434]

Fahad Alharbi the fraction 2/2 equals 1 because 2/2 means 2 divided by 2.

[@sejalyadav9281]

He is obviously a troll, and you fell for it.

[@Ass-kc8ru]

Fahad Alharbi 2 divided by 2 is 1

[@diordynemaxime7841]

2/2 equals 1 because it's one whole.

[@michaelroberts5801]

on part two you added on one of your examples?... I thought you were supposed to add 25 + -11 to get y intercept?

[@gemmachilds969]

I dont know if y = mx + b is American or just a different way of putting it, but I learnt it as y = mx + c . I also learnt m as being the gradient not the slope, are these the same thing with different names😅?

[@Minato191i]

I came to watch this to revise for my moch exam.

[@Opethfullcovers]

Probably because people don't pay attention in high schools and teachers have to repeat themselves.

[@RuthvikJain]

2024 anyone

[@ShanyBoy-2cc]

Me man 🙌

[@BloodandRainbows]

I have exams next week, while I was watching this she comes in and says "I thought you were studying!" I'm like..."I am o.O"

[@KY.M19]

I was 2 years old when this came out

[@aarnachopdekar9490]

I was a month old exactly 🤣✌🏻

[@XMSTERY3]

At 5:57, what did you do to get 25?

[@infiresmanihatesnakeuyougo1424]

9 years had passed :< but imma watch this

[@m7saly-909]

yep 15 years old this video

[@BaldManShorts]

I was 3 years old when this was posted

[@the_krishna512]

2018

[@sagineelasme2276]

does anyone know where he got the 33 from and the 25 from?

[@hannahbeth6424]

25 is from the LCM bro, --> 5*5/1*5 -33*1/5*1 = 25/5-33/5 = -8/5..

[@cole5446]

this video is older than my nephew

[@shinigamirenegade]

where did he get the 25 on 6:06

[@JaySon-gi9hi]

can I use y=mx+c

[@yaflah6484]

13 years wow

[@shreyas4498]

rather than youtube thank khanacademy sis.

[@amaanali1106]

I swear its y=mx+c

[@arifamohammadi2698]

It doesn't matter, people put b or c or even y0 in this equation, All are acceptable.

[@johannneske5604]

11 years now...

[@blackairforceone]

eeeee confusing

[@TheMarijuanaMonk]

fuck yes to this comment, I too feel the same way. this guy's great! thumbs up and subscribed!!!