Question

Y is inversely proportional to X.

When y

20, x = 2

Work out y when x = 5

Answer 1

When x = 5, y = 8.

Explanation:

y is inversely proportional to X.

This means that we solve this using the rule of three for inversely proportional variables, that is, we apply line multiplication instead of cross multiplication.

y = 20, x = 2

Work out y when x = 5

20 - 2

x - 5

Applying line multiplication

`5y = 40`

`y = (40)/(5)`

`y = 8`

When x = 5, y = 8.