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suppose that f(x) varies directly with x and f(x) = 160 when x = 5. what is f(x) when x = 0.5?

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16
32
160
180

 Mar 20, 2018
 #1
avatar+638 
+2

I'n not sure, but if it is a direction variation, than 

 

160/x = 5/0.5

 

x = 16

 

16 will be my answer, but I'm not sure. 

 

Supermanaccz

 Mar 20, 2018
 #4
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0

Yep, it is right, thank you!!!

Guest Mar 20, 2018
 #2
avatar+100456 
+1

We need to find  the variation constant, k

 

We have that

f(x)  = k(x)

160  =  k (5)      divide both sides by 5

32  = k

 

So  when x  = 0.5, we have

 

f(x)    = 32 (0.5)   =  16

 

Just as  Supermanaccz  found   !!!!

 

cool cool cool

 Mar 20, 2018
edited by CPhill  Mar 20, 2018
 #3
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0

Thanks so much!!

Guest Mar 20, 2018

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