Question

The variables Y and X have a proportional relationship, and y=12 when x=5. What is value of y when x =8? Enter your answer in the box.

y=_____

Answer 1

19.2

Explanation:

X=12/5

Answer 2

y=19.2

Explanation:

Here as y is proportional to x

so

`y=kx`

When y = 12 , x = 5

We have

12 = 5k

`k=(12)/(5)=2.4`

So now we have

y=2.4x

When x = 8

y = 2.4(8)

y = 19.2