When we have a systems of equation, we can solve it algebraically and also solve with geometry we can graph or use substitution/elimination. When we have exactly one answer, it means the system is consistent and independent. That means the lines intersect at exactly one point. When we have a infinete number of solutions, it means he lines overlap each other so every point on the lines is a solution. That is called consistent nod dependent. When we have no solution, which is when lines are parallel toeach other. There is no intersection, so there is no solution. Then the system is inconsistent. 
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