Question

A varies inversely with b. if a=9 when b=2, then find when b=6

Answer 1

a
`\alpha`

1/b

a=k/b

k=a×b

where a=9

b=2

k=?

k=9×2

k=18

where a=?

b=6

k=18

a=k/b

a=18/6

a=3