Question

The problem is:
Minimize
C=2x+y
x+y≥3,
x+2y≥4,
x≥0,
y≥0

Answer 1

It'd help you greatly if you'd please draw a neat diagram showing each of these constraints on x and y. Identify and label all corner points. Note that everything will be in Quadrant 1. Please consider using the Draw utility (below).

Answer 2

That's the thing, I don't know how to do that

Answer 3

I don't understand how to do that