When you solve a system of equations algebraically, how can you tell whether the system has, zero, one, or an infinite number of solutions?

Question

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Answer 1

If the result in a false statement, e.g., 3 = 5, there are no common solutions

If the result is a tautology, e.g., 3 = 3, there all solutions are in common

If the results is a specific value, e.g., x = 4, there is one common solution

This something you should be able to do.