(a) Show that if ad - bc != 0 then reduced row echelon form of S =
(b) Use the result in part (a)
7. [10 points] (a) (5 points) Show that if ad-beã¡0 then the reduced row echelon form of S = is So (b) (5 points) Use the result in part (a) to show that if ad-be, 0, then the linear system ax + by = k cx + dy = 1 has exactly one solution
