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.

Answer 1

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

Answer 2

@AriPotta

Answer 3

take those two points (5,5) and (10,1) and plug them into the slope formula:\[\frac{ y _{2}-y _{1} }{ x _{2}-x _{1} }\]

Answer 4

okay

Answer 5

did you get it?

Answer 6

no

Answer 7

ok so you have the points (5,5) and (10,1) so when you put them into the formula, you get \[\frac{ 5-1 }{ 5-10 }\]can you work it out to get the answer?

Answer 8

0.8

Answer 9

it'll be negative tho

Answer 10

okay

Answer 11

\[\frac{ 5-1 }{ 5-10}=~\frac{ 4 }{ -5 }\]
that's why it's negative

Answer 12

so its -0.8 or -4/5

Answer 13

yep. it says put it in as a decimal, so -0.8

Answer 14

thx

Answer 15

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