we have that

solve for y
-------> equation

so
Assume a value of x and then with the equation calculate the value of y
case N 1) Assume

substitute in the equation
and find the value of y

therefore
the answer Part 1) is
The pair of negative integers is

case N 2) Assume

substitute in the equation
and find the value of y

therefore
the answer Part 2) is
The pair of negative integers is
