Question

The variable z is inversely proportional to x. When x is 16, z has the value 0.9375. What is the value of z when x= 26?

Answer 1

The problem belongs to indirect variation.

formula for indirect variation is
`z*x=k`

we have
`x=16`

`z=0.9375`

we know that
`k=z*x`

`k=0.9375*16=15`

now we need find
`z` when
`x=26`

`z=k/x`

`z=15/26=0.57`