Question

Which linear system has the solution (6, 6)

A:4x - 3y = -1 -2x + y = -3
B: x + y = 12 3x - 2y = 6
C: 3x + y = 4 4x - 3y = 1
D: 4x + 3y = 0 2x - y = 0

Answer 1

B: x+y=12 3x-2y=6
6+6=12 (3×6)-(2×6)=6

Answer 2

By substituting x = 6 and y = 6 into the options we have that the correst answer is option B.