X y 1 1.6
2 3.2
3 4.8
4 6.4
The table shows four x-values and the corresponding y-values. Which of the following statements best describes the relationship between the variables x and y ?

The variables x and y vary directly because the ratio yx is constant for all (x, y) pairs in the table.
The variables x and y vary directly because the ratio y to x is constant for all x comma y pairs in the table.

The variables x and y vary directly because when the x-value increases by 1, the y-value increases by a constant.
The variables x and y vary directly because when the x -value increases by 1 , the y -value increases by a constant.

The variables x and y do not vary directly because the product xy is not constant for all (x, y) pairs in the table.
The variables x and y do not vary directly because the product x y is not constant for all x comma y pairs in the table.
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