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–6 -2/3 3/2 6
-2/3 would be my guess
Guessing randomly doesn't work in math :-) Please give a reason.
because usually its x/y right? so the inverse would be y/x
You are correct that "usually" you see expressions like x/y in class and the inverse of x/y is y/x, but that is not what this question is asking for.
So its 6?
no that doesnt make sense
Yes. 6 is correct :-)
For the inverse variation equation xy = k, what is the constant of variation, k, when x = –3 and y = –2 x * y = k -3 (-2) = 6
Thank you! Can you help me with another one?
I can try.
The inverse variation equation shows the relationship between wavelength in meters, x, and frequency, y. y=3x10^8/x What is the wavelength for radio waves with frequency 3 × 10^9? 1 × 10^–1 m 3 × 10^–1 m 3 × 10^17 m 9 × 10^17 m
so find y=3x10^8/x
Read the problem carefully. Decide what unknown number is being asked for.
that's not an answer choice
I still dont understand
what is the question asking for?
What is the wavelength for radio waves with frequency 3 × 10^9
Good, where is the wavelength in the formula they gave you?
wavelength is x and frequency is y
so they want you to find x, right?
Ok so far?
Do you know how to solve for x?
I plugged it in but it came out to be 1
plugged what in?
is it A?
Thanks for trying :D