Graphing systems of equations | Systems of equations | 8th grade | Khan Academy

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Graphing Systems of Equations
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8th grade on Khan Academy: 8th grade is all about tackling the meat of algebra and getting exposure to some of the foundational concepts in geometry. If you get this stuff (and you should because you're incredibly persistent), the rest of your life will be easy. Okay, maybe not your whole life, but at least your mathematical life. Seriously, if you really get the equations and functions stuff we cover here, most of high school will feel intuitive, even relaxing. (Content was selected for this grade level based on a typical curriculum in the United States.)
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
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[@matehoe3631]

confused me even more great

[@najwa2939]

Lol I actually understood it more😂

[@1mnot4rrogant90]

Same

[@3bwd420]

Same

[@berlinelouis7761]

Same🤦🏿‍♀️🤦🏿‍♀️

[@jakobwolfe2971]

This is extremely confusing

[@najwa2939]

how

[@introvertgonwilde6751]

Najwa Jendaya math. That’s how

[@xc6603]

@@introvertgonwilde6751 stop using a fixed mindset

[@Lotsothestrawberrybear]

Introvert gonwilde Um 😐 this dude is explaining it SO CLEARLY!! like how the frick do you not understand

[@userlikesramen]

@@Lotsothestrawberrybear don’t make people feel bad for not understanding something

[@emmafrench6454]

it says grade 8 but i'm learning this in grade 10 rippp

[@billymazehere9561]

same

[@freedomeiden]

Im learning in 7th💀

[@Booga04Minecraft]

I'm learning this in 9th

[@user-gu3ip8ud6v]

SAMEE

[@MrBeafyYT]

EmmaBemmma same 😂

[@Booga04Minecraft]

I wish that you didn't need to know math to be successful... this is SO hard! :I

[@applenuggets662]

Well a lot of people say that you don’t use math in the real world

[@belalmohamed2561]

Did you graduate or not yet nowadays?

[@slayeriffic]

i’m still confused thanks

[@tti4919]

good job, but can you put sample problems for students to work on, then you can help solve them. This will make ya great.

[@xx_inkybunny_xx3248]

It’s on the website, I think.

[@sir_cahstic3637]

Slope intercept seems so much easier

[@xc6603]

You need to solve for x and y to fjnd the slope intercept.

[@colleenmichelle3421]

it is

[@xxYetterxx]

TED sent me here too. Keep up the good work Salman, This is where education needs to go, you nailed it

[@purvipatel4367]

So much more helpful than my textbook!

[@hamsandwich69]

srsly

[@videolepper3257]

What if the numbers in my equation are only variables? Ex: X - Y = 9

[@bluenight317]

you can make it to x-y=9 to x-y=9
-x -x
-y=9-x

[@nouraalhomsi7837]

i think you have to substitute one of the values with zero to find the value of the other.
For example if we use the equation you've put on here x-y=9, we would substitute the variable x with the number zero just to find out what the variable y is. Then we would end up with this 0-y=9, which is basically -y=9. This equation means that 9 is equal to -y. Now we have to isolate the variable y. To do so, we would divide both sides by -1 (basically the same thing as just -). The final answer would be y=-9.
I hope this was helpful :D

[@OlivertheJoyboy]

This video really helps me understand the topic. You saved my butt. Thank u so much KHAN ACADEMY!

[@dhidhi1000]

4:30 the point is actually (8/3,0) - if your follow the standard (x,y) point notation.

[@EyeLean5280]

So glad to find a video with a proper graph. In most, they're hand-drawn which at best is harder to see for the student and at worst can lead to an incorrect answer, as it did for one UA-cam professor.

[@evandwyer8597]

AMAZING. He has a direct line to our brains. Its like a constant feed!!!!!

[@imcrying8225]

i am confusion.

[@afno100]

thank the lord for khan academy!

[@zoebreannbarker]

thank you so much this really helped a lot!!!

[@misspetmalu501]

THANK YOU VERY MUCH KHAN ACADEMY!!! But, I still have a problem. How to get this, pleaaaase!
x+3(1-y)=0
3y-2(6-x)=0
???

[@thecadencer]

This was very helpful to me! I am doing a BYU Independent Study class and this was one of the videos from the links they provided for help.

[@EjaeA]

This is helpful. Thank you for putting this up!

[@redsoldier568]

Understood it very easily,thank you.

[@richelleermac8541]

Helped me with Math! Thanks a lot!

[@TheGingerLPS1235]

OHHHHH! So you zero the x and then find the value of y to equal the interger?

[@SuperCer054Real]

these dont have the greater or equal signs on them :(

[@life7374]

Wow, I finally understand what the hell the point of graphing it was. I never actually understood what I was doing before. 6 and a half minutes very well spent!!!

[@VerryLongName]

you almost sound like vlad from vladtv

[@livingdead9675]

dude this didn't help at all, it's not the format im using, the formula for mine is y=Mx(+or-)B

[@sunnyboy6830]

i agree

[@firstrazor9782]

That’s slope intercept form

[@iceninja4607]

Living Dead
Actually all you have to do is rearrange into that formula.
5x+3y=7
3y=7-5x
Y=7/3 - 5/3x

[@megamar]

Thanks for making it look easier.

[@geniusAyushPateria]

Hey its good to know that you are expanding but please keep updating this videos on torrent.

[@Dagedar31]

i bet people look up this stuff when they need help on their homework 😂

[@theexplorer7139]

Mariusparkour Lol nothing wrong with it.

[@salwakamila9015]

No shit

[@namra1354]

Mariusparkour i have a test tomorrow man 😔✌🏼 this video just made me even more confused

[@evelynsanchez3330]

thx I have a test tomorrow and it is gonna help a lot tomorrow

[@mlins7]

Great video. Thank you!

[@josuedominguez1223]

Thanks! It really helped.

[@BlueMoonBuilds]

You let me down khan academy man

[@HaleyandAri]

Thank you so muchhh I was absent today and this was the lesson we were going over

[@kayla9191]

i hate being in pre-algebra. 😤😤

[@SQueezieBodezie]

YOU ARE A SAINT!

[@magdybakir2552]

Easaly explained! Thanks.

[@abusivepenguin9927]

This is so helpful thank you

[@isabellaherrera880]

you are a lifesaver

[@jordanshellabarger4865]

Nice video, it would be helpful if you did it a little slower but still great video

[@Steidemeister56]

what do you mean in this example or generally?

[@zachem66]

awesome video!

[@junior1984able]

is this the same as finding the x and y interceptions?

[@jerancantor8772]

Thank you. :)

[@giuseppejones1554]

"KHAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAN"
-Spock

[@jon5579]

Thanks a lot

[@tast791]

*Thanks pretty easy*

[@vhc7937]

Thanks helped a lot

[@nackyding]

Thank you.

[@healthinspector2707]

Why do they make us learn this in High School, I mean c'mon man , this just wont do , Can"t get my dumb head around this shit

[@healthinspector2707]

# pick up the soap

[@yurikimido858]

so khan what if the answer has a y= instead of a 5x like y= 3x and the bottom starts with 6x - 2y how does that work?

[@garrettrusselm135]

Thank you for the help

[@francisquewislande6779]

what about when the equation is xsquare

[@aasimahshaheen7260]

i have no idea why whenever i plot this on the graph they dont line up straight

[@tpge09298]

DUDE That was really helpful idek how i understood that..

[@dpm50k]

no❤ but I fw you for trying

[@bluenight317]

(0,8/3) is meant to be (8/3,0)

[@smacymorla7825]

Confused me way more

[@Sonialohan]

k I don't know what my Y is so how would I go about doing that and my form is in Y=MX+B

[@elpatostudios1067]

For the people who get confused just use this website called desmos and type in both equations and then go to where both lines cross that your answer

[@ShottaBoyProduction]

Khan is a G.

[@bacontimeladsMSM]

Math is cool, I love it, but why must it being this confusing

[@Palerooski650]

thanks a bunch

[@armandomena86]

How time consuming is that? Using tables to find the ordered pairs.the easiest and quickest way would be the cover method.

[@vebosjunk7898]

thanks dude

[@ritaibraheem3956]

but how do i solve it if the y is on the other side? EX. y=2x+1

[@mushypork1272]

simply put 5x+3y-7=3x-2y-8

[@themacinmo]

one of my problems say x=1 what do i do

[@jiquepfister1640]

thank you so much for the help bc why my teach wouldnt just say this from the jump like ://///

[@gaafersaloum4042]

Can x and y be any number? Or does it have to be 0

[@xc6603]

It can be any number

[@theboredalex_]

I think he’s going too fast and I have to keep going back like five times every time he explains something new. 😫🤯

[@crambo4590]

khan academy is my teacher from now on. my actual teacher sucks

[@justinlevine3936]

Same

[@LimitlessA8N]

It says g8 but I’m studying it at g7

[@frilink]

TED Talks sent me here...........

[@your_momlol]

oop- still confused AF

[@sam3916]

Same I’ve been studying this for like 3 weeks and don’t get at all what I have to do 😢

[@syrexx7174]

He did it the hard way and people don’t get it

[@daphniefarkas5703]

I'm learning this at 40 and failed my first math test 🤦‍♀️

[@manabe2237]

tbh I've been rewatching this but I'm still struggling
-I'm fucked aren't I

[@sandersfive4966]

I comment a lot pn this

[@michaelgodfrey2dable]

And if it doesn't line up perfectly????

[@BryanPlays]

fanaticmike then it's not linear . If it's asking you the graph a linear equation, and when you graph it it isn't linear, your doing something wrong

[@loganbeathard9612]

He went to fast for some people even me and he did not give much other instructions on other problems that you could have in your question

[@basketballegend2]

you're always here to save my ass

[@najwa2939]

Lol same for me

[@thiguy08]

i have no idea what he is saying

[@lilymorales8649]

I didn't understand it still

[@raneemalaufi1167]

His video is really confusing I understood it 100% and I got nothing!!!!!

[@dpm50k]

Lmao what

[@jesusbeliever9876]

Thanks
Jesus died on the cross for our sins and arose 3 days later and grants eternal life to people who believe in him

[@thewatcher6224]

What if an equation is something like y= x-4. And. Y = -2x + 5?

[@godbullypolice5856]

It says 8th but I’m learning this in 7th

[@tashinchowdhury75]

i hate maths

[@zoebreannbarker]

thank you so much this really helped a lot!!!