Question

y varies inversely as twice x. When x = 3, y = 6. What is the value of y when x = 9?

Answer 1

\( \color{Black}{\Rightarrow y = k \Large \times {1 \over x}}\)

Answer 2

Find the value of \(k\) first.

Answer 3

what is k? how?

Answer 4

\( \color{Black}{\Rightarrow 6 = k\times{ 1\over 3} }\)

Answer 5

is the answer 2?

Answer 6

No no

Answer 7

First find the value of k

Answer 8

yeah-- k=18--- than y =2

Answer 9

\( \color{Black}{\Rightarrow y = 18 \times 9 }\)
We already know what x is.

Answer 10

Oops

Answer 11

Yes, it's 2.

Answer 12

XD
thankyou