Because linear lines can't intersect in two seperate places. They either intersect at one specific coordinate, or the lines are on top of each other and they intersect at every point.
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A system of linear equations can only have: no solution, one solution, or infinitely many solutions.
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In simple terms all that it means that there are more solutions than you can count!If the equations are all linear, some possibilities are given below (some are equivalent statements):there are fewer equations than variablesthe matrix of coefficients is singularthe matrix of coefficients cannot be invertedone of the equations is a linear combination of the others
Yes.
Two dependent linear equations are effectively the same equation - with their coefficients scaled up or down.