Algebra-1

2(2) + 3= 4 + 3 = 7 (satisfies the first equation)

2 − 3 = −1 (satisfies the second equation)

For A, 1 – 5 ≠ -1(not satisfy x − y= -1)

For B, 3 – 1 ≠ -1(not satisfy x − ...