Show that if Y-ax + b (a 0), then Corr(X, Y -+1 or-1. cov(X, Y) tx, Vix) We know Cov(X, Y) = C X, a X V(X). Then Corr(X, Y) which is 1 = = lal when -Select and -1 when Select Under what condition will rho = +1? The value rho = + 1 when I a >0 .