Question

If y varies inversely with the square of x, and y=6 when x=4, find y when x=0.1

Answer 1

9600

Explanation:

y varies inversely with the square of x

y=k/(x^2)

for some non-zero constant k

y=6 when x=4

6=k/(4^2)

k=96

y=96/(x^2)

x=0.1

y=96/(0.1^2)

y=9600