Question

give some real life examples of inverse proportion

Answer 1

I'll give you a few examples: 

1) Sale of sweaters: As the temperature goes up the number of sales goes down 

i.e. Increasing temperature decreases sales: Sales ~ 1/Temperature 

2) Squishing a party balloon: As you compress the ballon you decrease the volume casuing the pressure inside to increase (sometimes explosively!) 

i.e. Decreasing volume increases pressure: Pressure ~ 1/Volume 

3) Gravity: The further you move away from the Earth the weaker the pull of gravity. 

i.e. Increasing distance decreases force : Force ~ 1/(Distance)^2 

The '^2' in this example indicates that the force is inversely proportional to the distance squared; this is simple a result of gravity acting in three dimensions. 

Im sure if you had a think about it you could come up with many more inverse proportionality relations, there are lots out there! 

Hope this helps.