Question

Given that y is inversely proportional to x y =0.25 when x =4, find the value of y when x =5

Answer 1

Answer: y=0.2

Explanation:

y∝(1/x)

this implies that

y=k/x eq(*)

when y =0.25 when x =4

0.25=k/4

k=1

for y when x=5

y=k/x

y=1/5

y=0.2