Which set of values could be from a direct proportion

First table

Step-by-step explanation:

We have to find the set of value which could be from a direct proportion.

We know that

Direct proportion :

When x is directly proportional to y

Where k=Proportionality constant

K remain constant when x and y are in direct proportion

From first table

When x and y are both varies then ratio of x and y remain constant.Hence, it is in direct proportion.

From second table

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It is not direct proportion because k does not remain constant.

From third table

It is not direct proportion because k does not remain constant.