Solve a System by Graphing, Substitution, Elimination
To solve a system of equations we can graph, solve by substitution or by elimination. In this video we will cover all three.
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Пікірлер: 60
You're my go-to math teacher. Your videos have made summer school easier, especially because I'm learning completely new material at such a fast pace. I really need this, thank you.
Thank you I have a test on all three in 12 hours this has really helped.
You explain this a lot better than my professor, she just right notes and expects you to figure out each step on your own
@sockpocketpre-alpha8258
8 ай бұрын
Dang what’s your English professor doing smh
@___king___
7 ай бұрын
@@sockpocketpre-alpha8258 english?
@sockpocketpre-alpha8258
7 ай бұрын
@@___king___ I think there was a clever joke in there somewhere but I can't remember what is was.
@akapasokopo
2 ай бұрын
@@sockpocketpre-alpha8258 XD
Excellent video! I'm relieved you decided put all three methods in one video.
I know i am late to the party, but thank you so much! If i don't pass this test, i'm going to loose out on High school credits, and i now fell 10x more confident in myself and my ability to do this!🙂
Thank you so much for this compilation! I have a test on all of these in 2 days.
@brianmclogan
Жыл бұрын
Boom!!
@MrMrMrMr.-mg5fu
10 ай бұрын
Send the test to me please
This is so helpful
wow this helped a lot i have a test pretty soon good video!
Bro tysm, I needed this badly
I love this man
such a great teacher👍👍👍👍👍👍
So talented math teacher!
@kittycatgamer3327
Ай бұрын
Agreed 🎉❤
you make everything so easy can you please make videos on the harder things like quadratics and stuff
@brianmclogan
3 ай бұрын
I have hundreds of videos on quadratics. Check out my playlists on my channel
You just saved my grade thank you so much.😁
@brianmclogan
2 ай бұрын
You are very welcome!!
At 4:30 the graph solution given is not correct. The correct solution should have been (-2, -5). The graph was crooked.
@TeacherinNJ
3 ай бұрын
I noticed that, too. If he would have plugged them into the original equation he would have caught his mistake. I love his videos but you’ve got a keen eye there.
I don’t understand the way you’ve shown it why adding or subtracting in the first step of the equations
3 hours of studying fit into 13 minutes
Is the graphing in the first correct?
@kittycatgamer3327
Ай бұрын
Idk 🤷♀️
I found graphing so confusing since you were a bit fast found it even shed to register anything 🙁🙁😩😩
This is like a level maths. It’s dam hard
What grades do you teach?
why did 12y+(-12) make it x=2 i dont get it pls someone understand
@akapasokopo
2 ай бұрын
-30 and -28 made it 2. 12y is cancelled so it’s gonna be 0
i think the first one is wrong because i got (-2,--5,) i am using graph paper and i dont see the solution. Good video just a heads up
@ninacilliers3225
Ай бұрын
I tried it out on my own, and got the same answer as Mr.McLogan... also --5 is not a number. Remember that two negatives cancel out and give a positive number.
@kittycatgamer3327
Ай бұрын
@@ninacilliers3225 yes, two negatives equal a positive 😀
graph 1/4 pi in abstraction @ 45 degree rms sine wave as example also launch measure probe from 0/0 to intersect peak power inertia path of first 3 harmonicsmy pen goes dry trying
@johnnolen8338
Жыл бұрын
Why be a troll? McLogan is teaching basic algebra here, which has nothing to do with sine waves, peak power, or rms values. Though given the content of your comment I suspect that you don't know what any of those words mean yourself.
@akapasokopo
2 ай бұрын
@@johnnolen8338lol
@akapasokopo
2 ай бұрын
@@johnnolen8338lol 😂
11:04 what if it was 0
I am not understanding is there other way simpler
@VANEKsubsribe4cookie
4 ай бұрын
Yes
@angelm3853
4 ай бұрын
It's over for you
@Wally_darling-thewriter
4 ай бұрын
Well try to listen and then take notes on what he tried to explain. Or just what did you not understand?..
@nutglaze
3 ай бұрын
This dude elaborates too much it's confusing the students. Like when he says "you can replace them or substitute" like bruh just say substitute just keep it short and sweet they'll lose attention. Also simplify your vocabulary to them
@akapasokopo
2 ай бұрын
I don’t know what to say..
at 6:43 why does it -2x+4, and not 2x - 4 ?? someone pls expain
@jiyang4602
8 ай бұрын
How did you get 2x - 4? You should only subtract 2x from both sides to eliminate the x and so, the y will remain.
@TeacherinNJ
3 ай бұрын
You want to put it in slope-intercept form (y=mx+b) to keep it simple. Therefore, put the -2x before the 4. You never take the sign away from the number, so 2x cannot become -2x, and 4 cannot become -4. Since the negative is on the 2x then you have -2x and since the 4 has no sign it stays positive 4.
@akapasokopo
2 ай бұрын
How do you get 2x-4?
lizzie needa stop yappin
@lotusflower7042
4 ай бұрын
my balls yappin
Sir, are you by any chance taking students who've finished school? 😂😂
@brianmclogan
2 ай бұрын
What do you mean?
@kittycatgamer3327
Ай бұрын
@@brianmcloganit is a joke 😂😂😂
Kalbo
😂 it
this is really good! compiling related videos!