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Answer:
<em>x and y are not in direct variation.</em>
Step-by-step explanation:
<u>Direct Variation</u>
Two variables x and y have a direct proportion or variation if:
y = k.x
Where k is the factor of proportionality. The value of k must be constant for every ordered pair (x,y). If only one of them does not have the very same k, then the relationship is not direct.
The value of k can be solved from the equation:
Let's substitute the given points in the table:
<em>(2,8)</em>
k = 4
<em>(4,16)</em>
k = 4
<em>(6,30)</em>
k = 5
Since the value of k is not constant, then x and y are not in direct variation.