Please help and fill in the blanks.

a) x and y are not inversely proportional.

b) x and y are inversely proportional.

The value of k is: k=30

Step-by-step explanation:

We need to find if x and y are inversely proportional

If x and y are inversely proportional we will have:

a)

x      y       k=yx

3      8        24

4      6         24

5      4.8      24

5.5    4        22

As for all values of y and x, k is not constant so, x and y are not inversely proportional.

b)

x        y            k=yx

0.1    300        30

0.5     60         30

75       0.4       30

100      0.3      30

As for all values of y and x, k is constant so, x and y are inversely proportional.

The value of k is: k=30