SOLUTION: Hello, I think I found my solution but I'm a little confused. I think I'm using this formula y=kx. So if im using that formula, do i do this? y=kx 15=k(10). Do I solve for k?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Hello, I think I found my solution but I'm a little confused. I think I'm using this formula y=kx. So if im using that formula, do i do this? y=kx 15=k(10). Do I solve for k?       Log On


   



Question 1056469: Hello, I think I found my solution but I'm a little confused.
I think I'm using this formula y=kx.
So if im using that formula, do i do this? y=kx
15=k(10). Do I solve for k?
Any help is greatly appreciated! Thank so much for the help regardless!
Problem: The time it takes to get a sunburn varies inversely as the UV rating. According to CBS News online Consumer Tips, at a UV rating of 6, an average person can get a sunburn in as little as 15 minutes. How long would it take to get a sunburn when the UV Rating is 10?

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
Yes, solve for k
but start with
y=k/x, since varies inversely with x
15=k/6
k=90
now use k in the second part
y=k/x
y=90/10
9 minutes.