Question

The Varials x and Y are directly proportional and Y=4 when x=9 . What is the value of Y when x=18

Answer 1

Y= 8.

Explanation:

If they are directly proportional, we can set up two fractions like this:

`(4)/(9)= (Y)/(18)`

We can solve for Y by multiplying both sides by 18, giving us:

Y= 8.