Yes, y varies directly with x in this case. This can be determined by comparing the ratios of y to x for each set of values.
For the first set of values (8, 13), the ratio of y to x is 13/8 = 1.625.
For the second set of values (16, 26), the ratio of y to x is 26/16 = 1.625.
For the third set of values (24, 39), the ratio of y to x is 39/24 = 1.625.
Since the ratios of y to x are constant and equal in all three sets, we can conclude that y varies directly with x.