Question

A balloon’s circumference decreases at a constant rate. The graph shows the balloon’s circumference over time.

What is the slope of the line that represents the situation?

Enter the slope as a decimal.


http://static.k12.com/calms_media/media/1512000_1512500/1512349/1/e682f410896cc483335c976d46f50fd393bb1abb/MS_IMC-140516-100013.jpg

Answer 1

@Algorithmic

Answer 2

Since the graph goes in a downward route the slope must be?

Answer 3

A negative?

Answer 4

Wait nvm i got 5.8 somehow

Answer 5

@Algorithmic

Answer 6

You are correct it would be a negative.
How did you get 5.8?

Answer 7

At first i guessed it would be negative (sorry for guessing then i just used slope formula

Answer 8

Hmm, do you know what slope is?

Answer 9

Nvm i redid what i did and got it completly

Answer 10

Wrong how would i find the slope correctly?

Answer 11

Okay, slope is the change in \(x\) over \(y\).
You can find the slope between two set points, by find how much is \(x\) and \(y\) to the next point. Some call this rise over run, are you familiar with such a term?

Answer 12

Yeah I've heard it before

Answer 13

Never fully understood what it meant though

Answer 14

Okay, take a look at this picture:
http://i.ytimg.com/vi/SD8Vb8A-kKE/hqdefault.jpg

Can you see how to apply this concept to your graph?

Answer 15

Ok that makes alot more sense

Answer 16

Could you help me with a few more i think i know the answer to this next one

Answer 17

Okay.

Answer 18

Manuel builds and sells wooden crates. He made a table to show how much his crates cost.

How much will he be paid for 7 crates?

$

Manuel’s Crates
Crates
2 4 6 8
Cost 25 45 65 85

Answer 19

I did 25/2 then i got 12.5 then i did 12.5*7

Answer 20

That is incorrect.

Answer 21

And got 87.5

Answer 22

D: ok time to learn what did i do wrong?

Answer 23

Try this:
Plot the points on a graph, and draw a line through them, then look at \(x = 7\) and find \(y\).

Answer 24

Would the correct answer be 75?

Answer 25

No. The value has to be between:
\(45~and~65\) remember.

Answer 26

But he get 65 for 6 crates a 7th crate would make it above that right?

Answer 27

Oops, yeah. The correct answer is 75. Sorry.

Answer 28

Oh ok lol you almost messed me up xD do you have time for a few more?

Answer 29

Wait nvm your all good thank you for always being so helpful :D

Answer 30

No problem, you are welcome.

Answer 31

Will you be on tomorrow i will most likely need your help again

Answer 32

Maybe, I get on when I have the time.

Answer 33

Ok well if you're on i will tag you in all of my questions ^_^

Answer 34

Okay, I will help you if I can.

Answer 35

Thanks so much! bye :D

Answer 36

You are welcome, take care.