Question

Tha values of x and y vary directly and one pair of values are given. Write an equation that relates x and y. Simplify completely. x =12, y=3

Answer 1

Y=kx

3 = k x 12

÷12

1/4=k

Y=0.25x or y=1/4x

0.25 x 12 =3

Answer 2

Explanation:

Direct proportion.

So, y = kx

Plugin x = 12 and y=3

3 = k *12

`(3)/(12)=k\\\\\\(1)/(4) = k`

`y=(1)/(4)x`