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

@Jhannybean

Answer 2

@iGreen

Answer 3

@MrNood

Answer 4

you have 2oints on the line, (5,5) & (10,1)



from just those 4 numbers you calculate the slope:

\[slope =\frac{ y _{2}-y _{1} }{ x _{2}-x _{1} }\]

put in the numbers from my drawing and 'do the maths'

HINT and Warning!! Be careful with the sign (+/-) of your answer