MR. BIGSBY'S MATH WORLD
  • Home
  • About
  • Math World
  • Algebra 1
  • Math 8
  • Pre-Algebra
  • Math Help

Elimination Method

12/21/2017

56 Comments

 

Elimination Method on youtube channel

Khan Academy - Practice

Picture
Picture
Picture
Picture
Picture
Picture
Picture
Picture
56 Comments
Hanah Hlue 3B
12/22/2017 10:13:00 am

First comment. Watching later.

Reply
Hanah Hlue 3B
1/1/2018 10:59:36 am

The answer is (1,8).
Steps:
-2x+3y=8
3x-y=-5 -> 3(3x-y=15)

Then I used the elimination method.

Reply
Dim
1/5/2018 05:28:32 pm

how did you get the answer (1,8)?

Dim
1/5/2018 05:55:47 pm

If you plug in (1,8) it only works for the 2nd one. not the first one.
-2(1)+3(8)=
-2+24=22
It doesn't equal 8

3(1)-8=
3-8=-5

Hanah Hlue 3B
1/6/2018 12:26:50 pm

I change my answer. The solution is (-1, 2). Thanks for correcting me and informing me of what I didn't do; check my solution. Hopefully I don't ever forget in the future.

Dimmy
1/9/2018 07:20:19 am

You're Welcome Love! :P

Dim
12/22/2017 10:13:16 am

2nd to comment :(

Reply
Dim
12/22/2017 10:13:41 am

Going to watch it later

Reply
Deven
12/24/2017 08:01:43 pm

Yey First comment in India

Lol by the time this gets posted its gonna be 1:30 am in america and 11:00 am in India xD

Reply
The kid who name is Deven
12/24/2017 08:02:54 pm

Lol i meant that it is 11:00 pm in america and about 10:00 am in india

Reply
Deven
12/24/2017 08:22:45 pm

BTW Merry Christmas Yall

DEVEN
12/24/2017 08:22:06 pm

I HAS THe answer

(1,8)

Reply
Merry holdiyas and Santa fake he st nicolas who died long time ago...Merry Christmas
12/26/2017 08:16:12 am

iq

Reply
oh i forgot (1,8) and sorry for you to here santa this way
12/26/2017 08:18:48 am

IQ,

Reply
ryan
1/2/2018 12:44:32 pm

oh i said that

francesca
1/1/2018 03:11:15 pm

thanks

Reply
Bryan
1/1/2018 05:23:10 pm

(1,8) is the answer

Reply
Chris
1/1/2018 05:36:22 pm

The answer: (1,8)

Reply
Mya H. 3B
1/2/2018 06:42:47 am

Thanks this seems really easy.

Reply
Jaden 1A
1/2/2018 12:37:19 pm

Thanks

Reply
Henry
1/2/2018 12:47:42 pm

SEQUENCE!

Reply
Alex Brent 1A
1/2/2018 02:07:25 pm

answer is (1,8)

Reply
Rosemary 1A
1/2/2018 03:05:07 pm

(1,8)

Reply
Sara
1/2/2018 03:32:33 pm

(1,8)

Reply
Abby Warner 1A
1/2/2018 06:34:14 pm

I disagree with the answers "(1,8)". I got (-1,2). If you plug that into the equations the ordered pair works. But if you plug (1,8) into the equations it does not work.

Reply
Dim
1/5/2018 05:27:24 pm

I agree!

Reply
❤
1/5/2018 07:24:57 pm

with you

emily a
1/23/2018 05:39:46 pm

nvm 1,8 doesnt work on the top equation

Ainsley S.
1/9/2018 01:07:31 pm

I got (-1,2) too. The first time that I tried it I got (1,8) but then I did it again with the other equation and I got (-1,2).

Reply
emily a
1/23/2018 05:37:12 pm

actually 3-8=-5

Reply
Daniel 1A
1/2/2018 07:06:41 pm

This is kinda hard to remember all of the processes but the challenge answer i think is (1,8)

Reply
krystaul
1/2/2018 08:46:54 pm

(1,8)

Reply
Tyson Bateman
1/3/2018 08:06:55 am

I think the answer is (1,8) but i may be wrong.

Reply
Tyson Bateman
1/3/2018 01:05:24 pm

Also the game looks like bingo.

Reply
Penelope?????
1/3/2018 09:26:57 am

The answer is (1,8)

Reply
josie
1/3/2018 02:45:30 pm

yo! answer is (1,8) ps. my phone is at 1% thanks a lot mr bigsby

Reply
Owen Holub-Smith
1/4/2018 03:47:06 pm

the answer is (1,8) thanks for the help on understanding.

Reply
Briana
1/5/2018 05:38:57 am

(1,8) is the answer

Reply
Cing Dim
1/5/2018 05:27:03 pm

I also disagree with the answer (1,8). I got the answer (-1,2).
x=-1 y=2
The equation are -2x+3y=8 and 3x-y=-5
I got the answer (-1,2). After that, I checked my answer by plugging it in (-1,2) and it worked.
-2(-1)+3(2)
2+6=8

3(-1)-2
-3-2
I did the KCC
-3+-2=-5

Reply
Shawn
1/7/2018 04:17:54 pm

1,8

Reply
Chloe
1/8/2018 02:09:33 pm

(1,8) is the correct answer.

Reply
Joseph Kluckowski
1/12/2018 12:48:04 pm

Hi

Reply
Colin McNamara
1/9/2018 03:51:23 pm

Wow this video makes elimination method look easy

Reply
real colin mcnamara
1/11/2018 11:40:23 am

we meet again

Reply
The actual real one
1/24/2018 04:47:55 pm

I see you’ve returned

Joanne Park 3B
1/10/2018 06:17:18 am

A lot of people got (1,8), I got (-1,2)

Reply
Truong
1/11/2018 02:03:05 pm

Hi

Reply
francesca
1/12/2018 07:25:37 am

thanks

Reply
Syed Bilal Faizullah/ThatOneMuslim
1/12/2018 08:21:50 am

-1,2

Reply
ThatOneMuslim
1/12/2018 10:10:34 am

It is not 1,8

Reply
Sir_Memes_Alot
1/27/2018 07:15:45 am

I Agree

Joseph Kluckowski
1/12/2018 12:48:48 pm

I sorry for being so late! 😬 Thanks for the refresher

Reply
emily a
1/23/2018 05:33:13 pm

-2x+3y=8.
9x-3y=-15(because it was multiplied by 3)
7x=7
x=1
3(1)-Y=-5
-3 -3
-Y=-8
Y=8


solution:(1,8)

Reply
Andrew Barone
1/31/2018 04:13:50 pm

1,8

Reply
krystaul
2/15/2018 10:44:11 am

(1,8)

Reply
David Oh
5/31/2018 01:46:28 pm

I'm studying for the finals and I forgot how to do most of the things I did earlier in the school year and this helped me re-remember a lot of things

Reply



Leave a Reply.

    Archives

    December 2020
    September 2020
    May 2020
    April 2020
    March 2020
    October 2019
    October 2018
    September 2018
    May 2018
    April 2018
    March 2018
    February 2018
    December 2017
    November 2017
    October 2017
    September 2017
    May 2016
    April 2016
    March 2016
    February 2016
    January 2016
    December 2015
    November 2015
    October 2015
    September 2015
    August 2015

    Categories

    All
    Variables

    RSS Feed

Powered by Create your own unique website with customizable templates.