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avatar+4690 

Help 1 

 Mar 8, 2018
 #1
avatar+95969 
+1

OK

 

We have that

 

y  = k wx  / z      and we know that  y  = 320   when  w  = 6, x = 20   and z  = 3

 

So   we need to  find  the proportionality constant, k......so we have.....

 

320  = k (6) (20)  / 3

320  = k *120 / 3

320  = k * 40       divide both sides by 40

8 = k

 

So......the correct answer is

 

 

y  = 8 wx /  z

 

 

Here's the second one

 

xy  + 16  = 0 

 

 

https://www.desmos.com/calculator/r8slfagryd

 

 

 

 

cool cool cool

 Mar 8, 2018

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