# What do the coefficients of a linear regression tell you?

${b}_{y x}$ gives the expected value of y when x is independent and ${b}_{x y}$ gives the expected value of x when y is independent, where ${b}_{y x}$ and ${b}_{x y}$ are the coefficients of linear regression.
r = sqrt{${b}_{y x}$ $\times$ ${b}_{x y}$ } is the Pearson's coefficient of correlation.