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How to find the intersection point of two linear equations 

Brian McLogan
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www.freemathvid... In this video series I show you how to solve a system of equations by graphing. When solving a system of equations by graphing we graph each equation separately and then analyze where the two lines intersect or if at all. If the two lines intersect at a point then the values of the x and y coordinates are our solution of the system. If our graphs are the same line then we have infinite many solutions and if the graphs are parallel and never intersect then we have no solution.
x + y = 3 , 3x - 2y = 4

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29 сен 2024

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Комментарии : 601   
@Strength14
@Strength14 5 лет назад
Love the real interruptions that happen
@linuxgirl_
@linuxgirl_ 4 года назад
Funny, I was just thinking how unprofessional it was.
@ljs650
@ljs650 4 года назад
linuxgirl nobody asked
@justincasheros2351
@justincasheros2351 4 года назад
@@ljs650 shutup
@ljs650
@ljs650 4 года назад
Gustin Gasheros s i m p
@AutryBP
@AutryBP 4 года назад
@@ljs650 stfu
@brianmclogan
@brianmclogan 12 лет назад
your welcome glad I could help
@AnimilesYT
@AnimilesYT 4 года назад
My welcome?
@krishi3504
@krishi3504 4 года назад
you're*
@tootaashraf1
@tootaashraf1 3 года назад
A long time ago replies were different
@Sylantjfjcx
@Sylantjfjcx 3 года назад
English not his strong point I guess
@neldino1251
@neldino1251 3 года назад
@@Sylantjfjcx sort of the reason why he teaches maths
@brianmclogan
@brianmclogan 12 лет назад
your welcome, glad I could help out are you studying for your finals now?
@ericadzz
@ericadzz 3 года назад
Yes, sir. Thank you so much for ur help!!!
@fancykook4388
@fancykook4388 2 года назад
9 years later..yup!
@qkulture8584
@qkulture8584 2 года назад
This made me want to be back in high school!! 😫
@usvr08
@usvr08 Год назад
You caught me 😔😔
@yp11yash36
@yp11yash36 3 года назад
Thanks Brian! You not only cleared my concept but also given me feel of this concept.❤️ I was confused for an year about this concept, but you cleared it in not more than 4 minutes. Love from India.
@keithhudson3138
@keithhudson3138 5 лет назад
Mr. McLogan, you deserve the RU-vid version of the Nobel Peace Prize because I'm just you have given peace of mind to hundreds of thousands of students all over the world. You've probably saved many of laptop monitors from being damaged as well. I'm your infomercial way out here in SoCal (Santa Monica College) damn-near every day. Thank you, again, sir!!!
@brianmclogan
@brianmclogan 5 лет назад
appreciate it Keith and so happy I can help you out. Keep working hard!
@brianmclogan
@brianmclogan 11 лет назад
you are welcome, let me know if I can do anything to help you
@brianmclogan
@brianmclogan 11 лет назад
that's awesome, so happy to help you out
@amelieaphrodite
@amelieaphrodite 4 года назад
who else is here during the corona outbreak and is trying not to fail the exams they have nexxt year
@GHT-hq9jv
@GHT-hq9jv 3 года назад
cramming in last minute revision for mocks
@kalautrusselyn7212
@kalautrusselyn7212 3 года назад
Girl you know the drill💁😂
@isaiahburns9926
@isaiahburns9926 2 года назад
I always hate it when people say "you taught me in 5 minutes what my algebra teacher couldn't explain in 5 months!" You mean you weren't paying attention in class when your teacher taught this lesson. If every single math lesson was just 5 minutes long, I'm sure you would walk away from most math classes fully understanding the lesson. Unfortunately, there's a lot of content to unpack in a school year, so each class lesson is full of lots of mini lessons, and you probably were doodling or sitting on your phone for half of them.
@zentxcs2364
@zentxcs2364 3 месяца назад
bro taught me a lesson i've been struggling on for 2 days
@whyisgamaretaken
@whyisgamaretaken Год назад
I love that this video finding the INTERsection was INTERrupted
@ejbananas3856
@ejbananas3856 Год назад
Thanks bro not gonna fail my topic test tmrw now
@AB23456
@AB23456 5 лет назад
0:50 goddamned announcements
@Escolope
@Escolope Год назад
Thank you for your help, you helped me as a German student!
@miguelmojica4472
@miguelmojica4472 5 лет назад
Girl In the backround "uhh I dont like that" should be grateful of the great teacher you have :/
@richnicky2447
@richnicky2447 3 года назад
The teenagers in this video are already adults and probably have a family
@Hi-ys4mc
@Hi-ys4mc 3 года назад
That's kinda crazy to think about it
@bardhylgjeta6836
@bardhylgjeta6836 2 года назад
This video helped me a lot, thank you from albania!!!
@Comrade_Alpaca
@Comrade_Alpaca 4 года назад
I love how this guy has gotten me thru the last 2 years of algebra and algebra 2
@randomkidsfromcherrystreet7430
we got a sneak peek into this mans work life and we know the sound of the bustling halls nad intercom all through a 4 minute math lesson. Life lore
@05soltom
@05soltom 7 лет назад
The interruption at 0:49 is amazing. The video is also very helpful :D Thanks
@brianmclogan
@brianmclogan 7 лет назад
haha, oh my, happy it helped
@notwidow6056
@notwidow6056 4 года назад
Thank you so much, my 8th grade algebra teacher kind of confused me, but you explained it so much better in just a few minutes!
@codboss7092
@codboss7092 4 года назад
when you have a test so you ask to go to the toilet and learn more during a test from a youtube video on your phone then your whole semester
@linengoldfish9878
@linengoldfish9878 4 года назад
Got math this semester
@POOJA-jo1cs
@POOJA-jo1cs 4 года назад
Photomath helps😉
@nolan2x.
@nolan2x. 7 месяцев назад
guy saved my life
@Jade-ib9np
@Jade-ib9np 3 года назад
that overhead speaker made me feel like im in class cuz im in virtual school
@taerakim4816
@taerakim4816 2 года назад
thanks for this quick solution Brian
@Cuz738
@Cuz738 5 лет назад
What happens if there is a number before the y. Such as 4y when you are trying to substitute it into the other equation.
@drizolo8936
@drizolo8936 5 лет назад
Then you take that 4 to the other side and it will divide the equation. Eg: x+4y=12 4y=12-x y=(12-x)/4
@aniketkini7129
@aniketkini7129 4 года назад
This video helped me so much. I'm in middle school doing advanced math, and my teacher barely teaches us, so your videos really help me keep up. Just a tip though: when you were explaining the part where you plugged in the y equation to y in the other equation, me and im sure some other people also did not understand it. But thank you so much Mr. McLogan
@valkyrie8721
@valkyrie8721 4 года назад
Don't know how quickly you're gonna reply since this was so long ago but... HELP PLEASE. "Line l1 passes through the points (4,5) and (7,11). Line l2 has the equation 2y=3x-1. Do these lines intersect." Do I just need to sub these values into the equation and see if they work or something else. (We're doing parallel and perpendicular lines by the way.) Thanks! :)
@kikiwg2264
@kikiwg2264 5 лет назад
Thanks! Helped a lot on my midterm review
@andrewlewis8613
@andrewlewis8613 6 лет назад
If I hadn't watched this video, my mom would stop me from playing basketball tomorrow.Thanks, Andrew
@brianmclogan
@brianmclogan 6 лет назад
well glad that did not have to happen, enjoy your game
@brianmclogan
@brianmclogan 11 лет назад
The intersection of parabola's, graph a parabola or what are you looking for?
@valdezgodwin2344
@valdezgodwin2344 25 дней назад
Wow that's just substitution method, going back to the 2nd method our prof taught us.
@brianmclogan
@brianmclogan 12 лет назад
question I what I tried to explain?
@brianmclogan
@brianmclogan 12 лет назад
happy to help!
@chepa1767
@chepa1767 4 года назад
This is amazing, thanks
@marknaughton
@marknaughton 5 лет назад
Have an exam today, thanks :)
@Taylorswiftielol
@Taylorswiftielol Месяц назад
Sir can we use elimination wayy pls sir reply and yes u r greattttttttttttt*10000❤
@ryanmorrin6689
@ryanmorrin6689 2 года назад
Saved me man
@brianmclogan
@brianmclogan 2 года назад
💪💪💪
@Yakumo_Sumeragi
@Yakumo_Sumeragi 3 года назад
Where did u get the 3 at the y value
@eggtoast3403
@eggtoast3403 3 года назад
Classic Officer Smith move right there
@reginaphalange3537
@reginaphalange3537 6 лет назад
Thanks!!!!!!!!!!
@brianmclogan
@brianmclogan 6 лет назад
You are very welcome!!
@nimishaamrutham7452
@nimishaamrutham7452 5 лет назад
What if one equation has variable cubed? Ex: y=x^3-2x^2-5x-9
@retailplus1185
@retailplus1185 3 года назад
How can I solve this simultaneous equation 2x+y=7 ×-y=2
@sirjohnson1274
@sirjohnson1274 2 года назад
Really helpful....thx mane
@brianmclogan
@brianmclogan 2 года назад
You are very welcome!!
@jessicaspence9465
@jessicaspence9465 5 лет назад
Where did he get the 5 at the bottom from
@JackJack04122
@JackJack04122 12 лет назад
Great video help me a lot thanks
@nicolisgregory8489
@nicolisgregory8489 8 лет назад
Thank you sooooo much man! you really helped me!
@brianmclogan
@brianmclogan 8 лет назад
+Daniel Peck you are very welcome! happy to be able to assist you!
@sierra.s
@sierra.s 4 года назад
Thank you.
@swiss4ever93
@swiss4ever93 4 года назад
Thank you!!
@wmurray003
@wmurray003 5 лет назад
"..then you can show me what you are DOING."
@name.surname.9707
@name.surname.9707 4 года назад
to this day mrs garvin was never found
@RD0231
@RD0231 6 лет назад
Wtf. When you're in college and this dude just taught you a simple high school algebra problem in 4 minutes and your professor takes two days to confuse the hell out of you. Thanks Brian!
@brianmclogan
@brianmclogan 6 лет назад
you are very welcome!
@_indomie
@_indomie 6 лет назад
Ryan Delgado taught. Sorry if I corrected you. Really sorry
@prissycurls670
@prissycurls670 6 лет назад
Ryan Delgado lol right.
@alialsharif7371
@alialsharif7371 6 лет назад
This man straight did the hardest way for funding intersection just use elimanation
@mattwilliams1844
@mattwilliams1844 5 лет назад
@@alialsharif7371 He used the substitution method, very common. elimination and brute forcing equations only takes you so far. If you want to go that route, learn to program
@thearchivejunkie6346
@thearchivejunkie6346 4 года назад
the poor dude keeps getting interrupted feels bad man
@GeekyGooForYou
@GeekyGooForYou 6 лет назад
Someone please hire this guy for Khan Academy. He knows how to explain this so well. 0.0
@brianmclogan
@brianmclogan 6 лет назад
appreciate it
@VanessaWilliamsnativedoll
@VanessaWilliamsnativedoll 5 лет назад
Geeky Goo I like him better than khan academy he’s amazing
@kamabokogonpachiro6797
@kamabokogonpachiro6797 2 года назад
u r the first dude i saw that used '0.0' or any emoticon in youtube.
@bis9817
@bis9817 2 года назад
@@kamabokogonpachiro6797 I use o.o and:0 alot lol
@kamabokogonpachiro6797
@kamabokogonpachiro6797 2 года назад
@@bis9817 oh T^T^T^T i personally prefer emoticons than emojis
@sammyamis3863
@sammyamis3863 5 лет назад
5 days in freaking math and still don’t understand...tell me why after this 4 min video I understand everything
@randomgameplay5465
@randomgameplay5465 4 года назад
well some teachers are meant to teach some think they are and of course, some need a little bit money
@brianmclogan
@brianmclogan 11 лет назад
Great! Keep up the hard work. Confidence comes from practice. I am a big fan by the way. : )
@zacmw2244
@zacmw2244 2 года назад
Lad what are you doing think you forgot to switch accounts
@suravidas7486
@suravidas7486 2 года назад
this is so funny
@akfkml1747
@akfkml1747 Год назад
@@zacmw2244 he was replying to another person before youtube replies existed probably
@The_Military_Aviator
@The_Military_Aviator Год назад
yeah he was talking to someone else in the comments since replies weren't things
@jamiebrannock8969
@jamiebrannock8969 6 лет назад
You really helped us here, you look like a sound guy much love from Ireland!
@bobbyzoola8787
@bobbyzoola8787 2 года назад
feels good to be represented :)
@peterkiarie3274
@peterkiarie3274 5 лет назад
Best editing skills ever
@DanDAlittleMan
@DanDAlittleMan 4 года назад
lol
@bowenjones4923
@bowenjones4923 4 года назад
Brian. You are my savior. I owe you my soul. I had a math project that made me want to commit arson but you saved me. You are my lord and I plan to worship you for the rest of my life. McLogang for life.
@themanfromtheeast2048
@themanfromtheeast2048 7 лет назад
i'm a college student and i have an exam in two days! this video really saved my ass! you good sir jut got yourself one more subscription.
@brianmclogan
@brianmclogan 7 лет назад
happy to help and happy to have you
@nolanmartin1870
@nolanmartin1870 6 лет назад
2:04
@laila_dawson3279
@laila_dawson3279 3 года назад
This helped me so much. I’m in the 7th grade and in an advanced math class and I was a little bit confused. But now I understand it!
@Sophia-ob7em
@Sophia-ob7em 2 года назад
same thank you so much!
@dsi6639
@dsi6639 Год назад
7th grade? 💀💀 Nah imma just stick to basketball I stg
@faisalkalha8738
@faisalkalha8738 6 лет назад
Brian i'm sure ur class gets A all the time, if it's IB, then 7 all the time
@brianmclogan
@brianmclogan 6 лет назад
I wish, every year and class is different set of challenges
@noamahlig8918
@noamahlig8918 6 лет назад
IB is madness haha crying myself to sleep every night jk
@spongebozz8704
@spongebozz8704 6 лет назад
I'm in IB 😓 trust me it's not fun
@af2954
@af2954 5 лет назад
ib student and damn ib's hardd
@ashlynnlilac9571
@ashlynnlilac9571 5 лет назад
@@spongebozz8704 How is it not fun
@cucadrive946
@cucadrive946 2 года назад
After procrastinating about studying in the summer for a few weeks, I came to this video in the embarasment of being rusty and thinking that I already got this down a few months ago. SO! Thankyou Brian!!!
@brianmclogan
@brianmclogan 2 года назад
You are so very welcome Cucadrive
@RixRunIt
@RixRunIt 7 лет назад
Awesome I was so confused today in my math class and you did a amazing job teaching this. Off to my homework!
@brianmclogan
@brianmclogan 7 лет назад
you got this!
@brianmclogan
@brianmclogan 12 лет назад
make sure you subscribe to my channel, I may upload a lot of videos but a lot of those videos will be from algebra 2
@micc2960
@micc2960 5 лет назад
Thanks mate, yr10 mathmatics is explained so much HARDER at my school. You've really boosted my confidence and understanding on this topic.
@cesruhf2605
@cesruhf2605 2 года назад
same
@GurshaanGaming
@GurshaanGaming Год назад
Easy method : Just put equation 1 into 2 and find x and y. Those will be the coordinates ,try yourself thank me later.🤓
@Inspirator_AG112
@Inspirator_AG112 3 года назад
If Ax + B = Cx + D, then x = (D - B) / (A - C) or x = (B - D) / (C - A). Yes, there are 2 Intersection Formulas.
@omnipresent_ninja
@omnipresent_ninja 7 лет назад
Flirting I see
@brianmclogan
@brianmclogan 7 лет назад
with who?
@faisalkalha8738
@faisalkalha8738 6 лет назад
@1:49 i seeee ;)
@gtbniko7040
@gtbniko7040 5 лет назад
Gabriel R. She’s prob a high school student u weirdo 😂😂
@Thedrawingofmanan
@Thedrawingofmanan 3 года назад
Thanks Brian 🙏🏼 Tip for you : Lock the door before shooting a video next time 😂
@artemisentertainment3316
@artemisentertainment3316 6 лет назад
I'm in Jamaica...and believe me I feel as though I'm apart of your class everytime I watch your video. #your #the #best #believe #me
@brianmclogan
@brianmclogan 6 лет назад
Love it and happy to have you join everytime
@yakshrajsingh8121
@yakshrajsingh8121 3 года назад
It was better if you just multiplied x plus y =3 by 3 on both sides and then substract the two equations nd then put the value of y in equation to find the value of x
@outcastdifferentbreed8679
@outcastdifferentbreed8679 4 года назад
Thankyou sir you solve my doubt ...........lots of love and support from india
@adventuresofhammadasif7990
@adventuresofhammadasif7990 5 лет назад
Good Sir. I was teaching my son equations and it helped. From Pakistan
@black4100
@black4100 3 года назад
If this man isn’t the best math teacher in the world then I don’t know who is
@anthonybernal3132
@anthonybernal3132 2 года назад
literally bro just explained everything my college professor fails to teach in an hour and 30 mins. this man taught me in 4 mins thank you :)
@waizunbtw1656
@waizunbtw1656 4 года назад
Thank you so much for such a good video... Thanks a lot
@cryvax
@cryvax 4 года назад
"ms garben would you please come to the main office, ms garbe..." *shakes head*
@GopiKrishnanKishoreKumar
@GopiKrishnanKishoreKumar 5 дней назад
yes, hello i want to mention that for the 3x - 2y = 4 linear equatio weren't you just supposed to divide by 2 cause when you rearrange the equation from 3x - 2y = 4 to 2y= -3x + 4 divide all by 2 like 2y divide by 2 and -3x+4 divide by 2, werent supposed to do that?, sorry just to clarify that cause in my school the teached us that way, just to make sure.
@gabriellic
@gabriellic 7 месяцев назад
Gosh! It's been ten years yet it's been still helpful. Thank you!
@finickyfoxx
@finickyfoxx 11 месяцев назад
I know this is an old video, but it really helped us out with my kid's math homework. Really easy to follow even though I haven't had to do this type of math in a loooong time.
@kaffuchino8244
@kaffuchino8244 4 года назад
Simple and straightforward, no beating around the bush either. Great vid!
@devilzwishbone
@devilzwishbone 3 года назад
Whilst this video is helpful, thumbs down because of the tanoy announcement and student questioning, it distracts and makes people have to wait to continue with his lecture, I would re-do the video because the information on it is good, just a shame for the distrations In short, you perform a matrice inversion to get the values of X and Y I did this as a computer program, and when I entered his values, I got the same answers for the intersection Thank you very much, I can submit my answers to my lecturer now Inverted Matrices.... The equations given are: EQ1: x + y = 3 EQ2: 3x, -2y = 4 In Matrice form that would look like [1,1] = [3] [3, -2] = [4] Switch over EQ1: X with EQ2: Y [-2,1] = [3] [3, 1] = [4] Negate EQ1: Y and EQ2: X (Multiply by -1) [-2,-1] = [3] [-3, 1] = [4] Then calculate the determinate Det = (-2 * 1) - (-1 * -3) -2 - 3 = -5 Det = -5 Now calculate the interim values for X and Y InterimX = (-2 * 3) + (-1 * 4) InterimY = (-3 * 3) + (1 * 4) X = InterimX / Det Y = InterimY / Det X = -10 / -5 Y = -5 / -5 X = 2.0 Y = 1.0
@androidunderground40
@androidunderground40 3 года назад
Or you could just put both equations in y=mx+b forrm. Then all you gotta do is input both equations , hit the graph button, hit 2nd button and then the trace button. Then scroll down to intersection point. Hit enter 3 times and you will the get the intersection point of both equations. I only do this method just to check my work in case I messed up with my algebra. All of this is for the TI-84 Plus CE.
@Leopar525
@Leopar525 4 месяца назад
I just hope officer Smith went to the Principal's conference room and Ms Garving went to the main office and NOT to the R9..!
@_Anti_Communist_
@_Anti_Communist_ 3 года назад
Very helpful video! Btw , damnn those speakers in the background , my school doesn't even have any xd
@GuruRam77678
@GuruRam77678 3 года назад
Can someone help with this? y=8 y=-2(x-10)^2+6 At how many points do the graphs intersect?
@ellamaecatedrilla11
@ellamaecatedrilla11 Месяц назад
Thank you for this video,it really help me for my upcoming Licensure examination for Teachers 🙏💖
@anoopkoomarboobun6150
@anoopkoomarboobun6150 3 года назад
Hello 2021 This video is 9 years old at that time I was 6 😕✌️ BTW it was very helpful I'm just bad at Maths cause I'm a gaygirl😅
@alminananong4221
@alminananong4221 5 лет назад
Please help me with this x=5y+37 and x=2y+19 that the points should be x=7 and y=-6, I'm really confuse with this. Thanks
@calisscy5133
@calisscy5133 24 дня назад
😮im literally speechless by how fast i understand ur explanation! Thank u soo much sir❤❤❤
@brianmclogan
@brianmclogan 11 лет назад
that's write, what stage of the process gets you confused. Writing? Graphing? Determining the intersection?
@AhmadSeif-ri3ye
@AhmadSeif-ri3ye 5 месяцев назад
First the announcement , then he drops his marker cap, then somebody walks in 😂😂 Thanks for the help though, teacher. It really does help a ton.
@wurmie
@wurmie Год назад
It would take 15,000,000 for that to start paying off, but if you have that much faith in your company than 2% more is big.
@AshmitaNautiyal
@AshmitaNautiyal 3 года назад
To which class was he teaching? Why are college lads watching this video. Umm we did this kind of problems in 9th grade😶
@pumpkinqreadchanneldesc4811
@pumpkinqreadchanneldesc4811 4 года назад
My online teacher sent us a blurry handwriting of an explanation that looks like it was written by a chimp with parkinsons. Took me twenty minutes to read. You explained this in four.
@kipsampson7709
@kipsampson7709 3 года назад
anyone else watching in 2021?
@studytime2802
@studytime2802 4 года назад
Can you find this PLZZ Q- the intersection point of equation 2x+3y=5 with X axis is....
@XpertKaif
@XpertKaif 11 месяцев назад
It was like a miracle 🔥🔥, i was frustrated and got this video and solved my tough question in seconds 🔥🔥🔥😫😫😫
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