Which tables represents a direct variation

Sure the first guy is right the answer is B

Step-by-step explanation:

Because a direct variation must have the same constant(K) and table b contains same constant which is 3.If you are not sure you can divide all the y values by the x values and you get the answer.

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

5+2x=a

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