Graphs of inverse proportion problems

Maths

True or False? Inverse proportion  can be represented graphically with the line 𝒚 = 𝒂𝒙 passing through the origin.

True or False: Inverse proportion can be represented graphically using 𝑦 =𝑎/𝑥. This is a curved line.

It takes 4 builders 6 days to build a wall. How long will it take 2 builders?

It takes builders 6 days to build a wall. How long will it take 8 builders?

It takes 2 people 3 hours to clean the house. How long does it take 6 people to clean?

A journey takes 6 hours if driving at 30 mph. How long should the same journey if the driver drives ta 60mph?

True or False: The circumference of a circle and its diameter are inversely proportional?