Which ordered pair is a solution of the system of equations. 2x - y = 4 8x + y = -9

Question

(0, −4) (−5, 5)(-7/2, -1)(-1/2, -4)

Answer 1

None of the ordered pairs is a solution for the system 2x - y = 4 and 8x + y = -9

 

(0,-4): 4 = 4 and -4 ≠ -9

 

(-5,5): -15 ≠ 4 and -35 ≠ -9

 

(-7/2,-1): -6 ≠ 4 and -29 ≠ -9

 

(-1/2,-4): 3 ≠ 4 and 0 ≠ -9