D
To find which ordered pair is not a solution, substitute the coordinates into the left side of the inequality and check validity of result.
A (2, 8 )
- 4 + 24 = 20 > 8
(2, 8 ) is a solution
B (- 1, 4 )
2 + 12 = 14 > 8
(- 1, 4 ) is a solution
C (3, 11 )
- 6 + 33 = 27 > 8
(3, 11 ) is a solution
D (- 2, 1 )
4 + 3 = 7 < 8
(- 2, 1 ) is not a solution
D (0, 6 )
0 + 18 = 18 > 8
(0, 6 ) is a solution
