Question

If x is direct proportional to y cube and x=32 when y=2

1. Find the value of x when y=6
2. Calculate the value of y when x=108

Answer 1

1x=864,

2y=3

Explanation:

y=6,x=?

if x is directly proportional to y^3 &if (when x=32, y is=2) we can understand that x=4y^3

1,x=4y^3

x=4(6^3)

x=4(216)

x=864

2,x=4y^3

108=4y^3

108/4=4y^3/4

27=y^3

√27=y

y=3

i think it is easy to understand,but if the answers are not clear you can ask me &i hope it helps you