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April 25th, 2017, 01:24 PM  #1 
Senior Member Joined: Jan 2017 From: US Posts: 120 Thanks: 6  Inverse Variation Questions
Here are a few different questions that have to do with inverse variation in algebra, that I would like to understand better. Could someone point me in the right direction as far as how I would set up these problems? You don't need to answer all of them, I would just like to know how to go about these types of problems. Thanks in advance! 1) Assume that i varies inversely with d$\displaystyle ^2$. If i = 6 when d = 3, then i = 29/2 when d = 2. True or False? 2) Suppose y varies inversely with x. If y = 4 when x = 14, what is the value of y when x = 21? 3) Suppose y varies inversely with x. If y = 3 when x = 2, what is the value of x when y = 5? 4) Suppose y varies inversely with x. If y = 12 when x = 10, what is the value of the constant of variation? 5) Express as a formula: The value p of a house varies inversely with its age q. 
April 25th, 2017, 03:22 PM  #2 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,136 Thanks: 1003 
Are these problems from your math teacher?

April 25th, 2017, 03:30 PM  #3 
Senior Member Joined: Jan 2017 From: US Posts: 120 Thanks: 6  
April 25th, 2017, 03:36 PM  #4 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,136 Thanks: 1003  
April 25th, 2017, 03:40 PM  #5 
Senior Member Joined: Jan 2017 From: US Posts: 120 Thanks: 6  
April 26th, 2017, 09:15 AM  #6  
Math Team Joined: Jan 2015 From: Alabama Posts: 3,264 Thanks: 902  Quote:
The rest of these are done in exactly the same way. Quote:
 

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