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Help. 18

 Mar 5, 2018
 #1
avatar+68 
+1

The graph shows an inverse variation.

 

Inverse variations are \(z=xy\)\(z\) in this case ​is 10. If you take each column and multiply them together, you get 10. This shows that the relation is inversed.

 Mar 5, 2018
 #2
avatar+94558 
+1

Thanks, Coop!!!!!....here's one more way to determine this :

 

If direct  we have that

 

y  =  ax     so

2  = a(5)

a  = 2/5

 

So......looking at  x  =  10

y  = (2/5)* 10   =   4

But y  should   =  1

So....not direct

 

 

If inverse, we have that

 

y  =  a/x

2  =  a/ 5

10  = a

 

 

So.....looking at x  = 10, we have that

 

y  =  10  / 10   =    1

 

Which is exactly what we require......so.......inverse

 

 

 

cool cool cool

 Mar 5, 2018

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