Answer: the first option:
x+ y ≥ 3
x + y ≤ 3
Explanation:
The solution set of that system is the intersection of the solution sets of each inequality.
The solution set of the inequality x + y ≥ 3 is the line x + y = 3 and all the region up and to the right ot that line.
The solution set of the inequality x + y ≤ 3 is the same line x + y = 3 and all the region down and to the left of that line.
So, you can see that the intersection of both sets is the line x + y = 3. Therefore, this is the solution.
