What are the sets of criteria a system analysist would use to evaluate a candidate?
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Systems of equations can have just about any number of solutions: zero, one, two, etc., or even infinitely many solutions.
There are more solutions in a half plane
They will have 2 different solutions or 2 equal solutions and some times none depending on the value of the discriminant within the quadratic equation
One solution
If they are quadratic equations then if their discriminant is less than zero then they have no solutions