Question

If y varies inversely as x and y= 2/5 when x= 2, find y when x= 1 equation

Answer 1

4/5

Explanation:

y=k/x

2/5=k/2

cross multiply

5k=4

k=4/5

substitute 4/5 for k

y=4/5/x

y=4/5/1

y=4/5