Question

Use Cramer's Rule to solve the system of equations. If D=0, use another method to determine the solution set. x + y = 8 x - y = 4 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The solution set is O. (Simplify your answer. Type an ordered pair.) O B. The system has infinitely many solutions. The solution set is (Simplify your answer. Type an ordered pair.) O C. The solution is the empty set.

Answer 1

8 = h + h = hx use cramer's rule to solve this equation. 8 T D = 1 1 -1 -8-4 % -1 -1 = -12 x = Da -13 4 - 8 - - 4. 1 2. y = Dy is solution set x= 6. y = 2