Question

Write a pair of linear equations which has the unique solution $x=-1,y=3.$How many such pairs can you write ?

Answer 1

The unique solution is given as x = −1 and y = 3.
The one pair of linear equations having x = −1 and y = 3 as unique solution can be
12x + 5y = 3
2x + y = 1
Similarly, infinitely many pairs of linear equations are possible.