Help. 18 ​

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.

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