Question

question

Answer 1

@pitamar

Answer 2

Yes?

Answer 3

come back

Answer 4

Ok I'm here

Answer 5

alright I have some I need some help with

Answer 6

ok

Answer 7

Ok, so we know that y varies inversely with x, so it's of the form \(y = \frac{k}{x}\), right?
Now we have to find \(k\). We are told that when x=2 we have y=2 so we plug in:
$$
y = \frac{k}{x} \implies 2 = \frac{k}{2}
$$Can you solve for \(k\)?

Answer 8

k=1

Answer 9

well that's not correct. if you have \( \frac{k}{2} = 2 \) and we want to get only \(k\) on the left, we have to cancel the division by 2.
We can do so by multiplying both sides by 2. Then we have:
$$
\frac{k}{2} = 2 \implies \frac{k}{2} \cdot 2 = 2 \cdot 2 \implies k = 4
$$

Answer 10

oh ok so we multiply gothca

Answer 11

the we could reduce y=4x as-well then right?

Answer 12

or reduce it to that

Answer 13

no, once we know \(k=4\) we just plug it in our expression:
$$
y = \frac{k}{x} \implies y = \frac{4}{x}
$$That's it

Answer 14

ok I"ll make a new post for medals! :)