Can the optimal value of the primal problem of a linear program ever be less then zero?
An example is: min 2x1 +3x2minimize $C=2x_1 +3x_2$ Subject to: 3x1+4x2<=5$3x_1+4x_2 \leq 5$. Obviously, x1$x_1$ and x2$x_2$ are free variables so the optimal solution is either 0 or negative infinity$-\infty$.
Just wondering which it would be and why it could or couldn't be negative infinity.