Question

8) y is inversely proportional to x?.
When x = 4, y = 3.
Find y when x = 5.

Answer 1

`\displaystyle y=2.4`

Explanation:

`{\displaystyle y\propto (1)/(x) }`

`\displaystyle y=(k)/(x)`

`\displaystyle 3=(k)/(4)`

`\displaystyle 3 * 4=k`

`\displaystyle k=12`

`\displaystyle y=(12)/(5)`

`\displaystyle y=2.4`