For example:
y = x, and
2y = 2x
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If the process of substituting leads to an identity rather than an equation then the system has infinitely many solutions.
if a dependent system of equation is solved, how many solutions will there be?
An inconsistent equation (or system of equations) is one that has no possible solutions. That is precisely why we call it inconsistent; there is no solution set that can be substituted for its variable or variables that will make the equation (or system) true.
If the lines cross then there is one solution. If they are on top of each other then there are infinite solutions. If they are parallel then there are no solutions.
False. There can either be zero, one, or infinite solutions to a system of two linear equations.