Question

Inverse Variation: Y=-12 X=5
Formula Set-Up( I think): 5(-12)=K
I assume I'd be dividing them, so they'd turn out like this; y/x=-2.4 unless they are multiplying it'd be xy=-60.

Am I right on how to solve this, by dividing?
On another note; Assume that y varies inversely with/as x. If y = -3 when x = 2.4, what is y when x = 2<---When a problem is like that, how do I start it off?

Answer 1

y = k/x

Answer 2

That is the formula for the second problem?

Answer 3

For both. since they both are inversely propotional.

Answer 4

Okay, so is my first answer correct?

Answer 5

this is wrong,

I assume I'd be dividing them, so they'd turn out like this; y/x=-2.4 unless they are multiplying it'd be xy=-60.

Answer 6

Please explain, then.

Answer 7

The second step you did is perfect.
k = -60

Now,
y = k/x
y = -60/x

This is correct. But i dont get " y/x=-2.4 "

Answer 8

Well, I was thinking at first the y/x would represent the original y and x which after dividing, came out to be -2.4. But, now I get how to do the problem after I turn k/5 into a fraction, factor it out by multiplying 5 and -12(5) = -60 right?

Answer 9

-60 thing is right.

Answer 10

Thanks!

Answer 11

Welks!