Which of the following equations is an example of inverse variation between variables x and y ?

A.) y=15x
B.) y= x-15
C.) y=15/x
D.) y=x/15

Help Please! Will give medal and fan!

Question

Which of the following equations is an example of inverse variation between variables x and y ?

A.) y=15x
B.) y= x-15
C.) y=15/x 
D.) y=x/15

Help Please! Will give medal and fan!

anonymous · Answer

well first of all, an inverse equation is $$y=\frac{ k }{ x }$$

anonymous · Answer

so the K or Konstant (or just constant) should be on top of the x because x can, theoretically go forever.  Therefore, C is your answer because it follows the equation format of an inverse variation.

anonymous · Answer

However, if you have a table of values- make sure you not that if you multiple the y (x) you should get the same k (hence KONSTANT) forever. This diagram will help. http://exchangedownloads.smarttech.com/public/content/cc/cc40adae-c40e-4009-83f5-3d8fe508ddb4/previews/medium/0002.png Hope that helps :)

anonymous · Answer

Thank you!

anonymous · Answer

haha no problem ;p