Question

If y varies inversely as x, and y = 3 when x = 6, find the value of x when y = 18

Answer 1

"If y varies inversely as x" means y = k/x


Since "y = 3 when x = 6", we can plug them in to get 3 = k/6


Solve that for k


Then use this value of k to find the value of x when y = 18

Answer 2

whats k ? 18 ?

Answer 3

yes, k = 18

Answer 4

3= 18/6

Answer 5

y = k/x

y = 18/x

18 = 18/x

18x = 18

x = 18/18

x = 1

So when y = 18, x = 1

Answer 6

but these are the answers
36
6
9
1

Answer 7

Alright, so where's the issue? I wrote the answer above