Question

With full explanation..​

Answer 1

Step-by-step explanation:

x is directly proportional to the y^2

$x \alpha y^2$

let k be an proportionality constant

$x=ky^2$

$x/y^2=k$

when x=8 , y=4

$x/y^2=8/4=k$

if x=32 , y=?

put x=32

$32/y^2=8/4$

now cross multiply

$8y^2=128$

$y^2=128/8$

$y^2=16$

$y=√16$

$y=4$

Answer

Option (a)

y=4