Match the vocabulary word with its definition. match the items in the left column to the items in the right column.
1.when two variables change in the same direction, one remaining larger than the other by the same factor direct relationship
2.to insert between neighboring points or estimate by taking an average of known values interpolate
3.a relationship between two variables in which the product remains constant.
4.when one variable increases the other decreases in proportion so that the product is unchanged inverse relationship