Question

There is an inverse relationship between x and y. If y is twenty when x is 2, what is x when y is 8?

Answer 1

Let the relationship is y = k/x. Put y = 20 and x= 2 and find k

Answer 2

i dont even know tbh

Answer 3

ok.
so we have inverse relationship between x and y
means when x increases , y decreases and when y increases ,x decreases.
now

Answer 4

we use chain rule to solve this.
if we found inverse relationship between two quantities then we reciprocal them
so,
\[\frac{ 2 }{ ? }=\frac{ 8 }{ 20 }\]
now solve for ? which is the required value.

Answer 5

\[?=\frac{ 20*2 }{ 8 }=5\]

Answer 6

thank you!!!!! :') @neer2890