Question

IF y varies inversely as x and y=10 when x=5 find y when x=25

Answer 1

y=k/x( where k is the constant)

10 = k/ 5

cross multiply

k= 50

so the relationship between x and y is

y= 50/x

when x is 25, y would be

y= 50/25

y= 2( final answer)