a1 = b1 = c1
a2 = b2 = c2
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The pair of equations have one ordered pair that is a solution to both equations. If graphed the two lines will cross once.
Presumably the question concerned a PAIR of linear equations! The answer is two straight lines intersecting at the point whose coordinates are the unique solution.
By the substitution method By the elimination method By plotting them on a graph
Any system of linear equations can have the following number of solutions: 0 if the system is inconsistent (one of the equations degenerates to 0=1) 1 if the system is linearly independent infinity if the system has free variables and is not inconsistent.
Yes.