SOLVE FOR X CHALLENGE PROBLEM

MR. BIGSBY'S MATH WORLD

SOLVE FOR X CHALLENGE PROBLEM

10/13/2015

34 Comments

Scroll to the bottom to see the video winners!

Challenge problem #1

CHALLENGE PROBLEM #2

challenge problem #3

Challenge Problems on Youtube

34 Comments

Hazel Montgomery-Walsh

10/14/2015 01:18:51 pm

Wow... what an awesome problem to solve! I wonder who came up with it? (: Also, when dealing with the slope of a line, is it ok to estimate...or not since the line would be that little percentage off?

Dennis Lin

10/14/2015 02:43:20 pm

Nice Problem! :)

Mr. Bigsby

10/14/2015 08:33:06 pm

Good question. We definitely do not want to round when graphing an equation because the line will be off. Using fractions in the slope is a better idea.

Example of bad rounding
y = 2/3x
y = .67x
(0,0) (1,.67) (2, 1.34) (3, 2.01)

When it should be (3, 2)
Now imagine times 1000
(1000, 670) vs (1000, 666.67) The y value is now off by almost 4!

I rounded since I was just solving but if I was graphing I would use a fraction.

fletcher thomas

10/14/2015 01:26:22 pm

both of those problems were insanely confusing but great job of explaining it mr bigsby . when you break it down it is still very hard but it is easier than when you started. also great job with the challange problem hazel!!!

taylor hemingway

10/14/2015 01:41:04 pm

i knew it was hazel's problem

Ethan Anderson

10/14/2015 02:40:30 pm

The problems made me confused

Rose

10/14/2015 03:24:37 pm

Nice Problem

Georgia

10/14/2015 04:41:23 pm

It was a little confusing but you explained it really well

Emily Ritzes

10/14/2015 05:32:42 pm

"I'm Mr.Bigsby and I aprove of this message." Also, did anyone notice when he was explaining the car example, his voice didn't match his lips? Just wondering...great problem Hazel!!!

Erica

10/15/2015 12:55:06 pm

I noticed!

Julianna

10/14/2015 06:01:50 pm

Nice problem!

Logan Nix

10/14/2015 07:52:05 pm

That made me less and less want to choose a car to buy when I'm older oh my

Lauren

10/15/2015 04:46:47 am

Good job solving that problem!

Erica

10/15/2015 12:56:49 pm

That game reminds me of LIFE for some reason.

alexis kahler

10/15/2015 02:36:52 pm

Alright I finally got to comment

Krissy

10/16/2015 08:23:53 pm

This confused me @ first 😂

Jaelyn

10/17/2015 07:03:12 am

How do you round the fraction onto a decimal

Hazel Montgomery-Walsh

10/17/2015 03:43:16 pm

Jaelyn-
I think its just like dividing...you can divide the numerator by the denominator to get the exact answer...and from there you can round the number. I hope that helps!!! :)

Hazel Montgomery-Walsh

10/17/2015 03:41:48 pm

Is the new video for the weekend's review up yet? I don't see it...and I'm wondering if it's just my computer. :)

Mr. Bigsby

10/17/2015 04:46:54 pm

The Weekend Review isn't a video. I just wanted you to take a look back at the comments to see the answers to students questions. Especially if you asked somthing!

Hazel Montgomery-Walsh

10/18/2015 03:26:02 pm

Thanks!

Megan Mcdaniel

10/18/2015 05:13:33 pm

Really good video :)

Viola

10/18/2015 05:15:35 pm

Confusing, but I mostly understand.

Amna

10/19/2015 01:47:16 pm

Zoe

10/19/2015 05:25:18 pm

Allyson Carter

10/20/2015 04:47:27 am

Sarina

10/21/2015 12:11:32 pm

Kendle Weaver

10/22/2015 06:36:45 pm

My brain hurts from watching this...😂😂😂😂😂😂

Karli

10/23/2015 03:04:12 am

This is one of the videos I was missing but nice video

maddox

10/26/2015 03:19:00 pm

so much math!

Justin Maddox

10/26/2015 04:11:17 pm

Wow that looked so complicated but you made it look so easy.

Jack

9/4/2019 01:52:12 pm

caroline

9/4/2019 02:58:53 pm

Kyra

9/4/2019 05:13:21 pm