question 1
The solution of systems of linear equations or inequalities can result in a solution (the graphed lines of the equations cross) in any quadrant (x and/or y can be negative or positive numbers). Certain problems must have a solution that falls in the first quadrant (both x and y are positive).
Describe the conditions that must exist for a “first quadrant solution” and give a real-world example when the solution must be in the first quadrant.