Which table represents a direct variation? Table A x 4 6 8 10 y 7 9 11 13 Table B x 4 6 8 10 y 12 18 24 30 Table C x 4 6 8 10 y 1 3 5 7 Table D x 4 6 8 10 y 3 3 3 3

A direct variation has the form y = kx, so the ratio y/x must be constant for every row. In Table B, the ratios are 12/4 = 3, 18/6 = 3, 24/8 = 3, and 30/10 = 3. Therefore, Table B represents a direct variation.

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