Use the interactive graph to plot each set of points. Which sets represent proportional relationships? Check all that apply.

A proportional relationship has the form y = kx, so each point must have the same y/x ratio, and the relationship must include (0, 0). In B, each ratio is 2/3; in C, each ratio is 1; and E includes (0, 0) with the other ratios all equal to 2. The ratios in A and D are not constant.

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