how do you find feasible region? in question
Maximise z=11x + 8y, subject to x ≤ 4, y ≤ 6, x+y ≤6, x ≥0,y ≥0.
Kindly refer the similar link for your query.
https://www.meritnation.com/cbse/class12-science/studymaterial/math/math-part-ii/linear-programming/215_241_10964
Regards
https://www.meritnation.com/cbse/class12-science/studymaterial/math/math-part-ii/linear-programming/215_241_10964
Regards