Here is the question:

**What is the maximum value of 2x+3y+4, subject to the constraints listed below?**

x>0

y<0

x>5

y>-4

x>0

y<0

x>5

y>-4

I know the answer to the question. And I know that in order to solve this question I need to check the corners of the feasible region. These are the points: (0,0), (5,0), (0,-4), and (5,-4). And, to substitute each of these ordered pairs into the expression 2x+3y+4.

I just don't understand how those points were determined. I tried graphing the inequalities, but I am still not getting those points. For instance, I don't understand how y< is the same as (5,0). Why is the x-value 5 in this ordered pair? As far as I understand there is no information given in the inequality to determine what the x-value would precisely be for an ordered pair.

can anyone please clarify some of this for me? How do I exactly get the ordered pairs?

Thank you very much