1.Given: x + y > 8 (5,4)

Solution:

Conclusion:

3.Given: 5x - y _> 5 (5,5)

Solution:

Conclusion:

4.Given: x + y > 0 (2,1)

Solution:

Conclusion:

5.Given: 10x - y - 5_< 15 (4, - 8)

Solution:

Conclution:​