7)

varies inversely as

Then

The values are

Find constant value.

Find value.

Substitute in

The value of 

9)

The function is

Find parent function

Observe the graph,

The parent function is Move 2 units up.

10)

The function is

Find transformations of the function.

Replace into the function.

Transformations of the function

11)

The function is

Find transformations of the function.

Replace into the function.

Transformations of the function