Find the product mentally. (r - s)2 2r2 - rs - s2 r2 - 2rs + s2 r2 - rs + s2

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.