Question

lesson name Direct and Inverse proportions
class 8
Answer the following question
1 x and y vary directly as each
other and :
i) x=3 and y= 8, find y when x=4​

Answer 1

Answer:

Since x and y vary inversely, we have:

xy=k

For x=3 and y=8, we have:

⇒  3×8=k

⇒  k=24

For x=4, we have :

⇒  4y=24

⇒  y=424

∴   y=6