How do you tell if a table is proportional?

A table is proportional if the ratio of the values in one column to the values in another column remains constant across all pairs of data. To determine this, you can calculate the ratio for each pair of corresponding values and check if they are all equal. If the ratiOS are consistent, the relationship is proportional; if not, it is not proportional. Additionally, plotting the data on a graph should yield a straight line through the origin if the relationship is proportional.