Question

y varies inversely as x, and y = 50 when x = 10. What is the value of y when x = 20?

Answer 1

y inversely varies so:
\[\large y = \frac{k}{x}\]

where k is any constant..

you are given with y = 50 and x = 10

So firstly find k from it..

Answer 2

is it 500?

Answer 3

y = 50 and x = 10

put that in the formula then tell me what you got for k ???

Answer 4

Yes k = 500

Now:

you have k = 500 and x = 20 can you find y using same formula??

Answer 5

25

Answer 6

Well Done..

Answer 7

oh thanks.... this was easy i just need to stop being lazy. The problem seems hard by looking but i need to actually read and try to solve on my own :)

Answer 8

Try more you will definitely get this..

Answer 9

ok :)