SOLUTION: Suppose x and y vary inversely, and y = 10 when x = 4. Write a function that models the variation. Then find y when x = 90. I need to show all the steps. Thank you!

SOLUTION: Suppose x and y vary inversely, and y = 10 when x = 4. Write a function that models the variation. Then find y when x = 90. I need to show all the steps. Thank you!

Algebra.Com

Question 1111385: Suppose x and y vary inversely, and y = 10 when x = 4. Write a function that models the variation. Then find y when x = 90.
I need to show all the steps.
Thank you!

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
I can say:

You are given the point ( 4.10 ), so

---------------------
Now I can say:

Given

----------------------
Check answer:
The new point is ( 90, 4/9 )

Multiply both sides by

OK
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