If one (or more) of the equations can be expressed as a linear combination of the others.
This is equivalent to the statements
the matrix of coefficients does not have an inverse (or is singular),
or
the determinant of the matrix of coefficients is zero.
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if a dependent system of equation is solved, how many solutions will there be?
dependent
an ordered pair that makes both equations true
If a system is inconsistent it cannot have any solutions.A system of equations is considered inconsistent when the lines are parallel which means they never intersect so there are no solutions.A system is considered consistent when they intersect at one point and have one solution (Also known as an independent system of equations).Dependent Systems are when the lines coincide (the same equation) so they have an infinite number of solutions.
Lety be the column vector the dependent variable,M be the matrix of coefficients, andx be the column vector of variablesso that the system of equations may be represented by y = Mx.Then the solution set is obtained by left-multiplying both sides by M^-1that is x = M^-1*y