Substitution, elimination and graphing are all techniques to solving systems of equations. true or false?

The correct answer is true.  Substitution, elimination and graphing are all techniques to solving systems of equations. Substitution is done by writing one equation in terms of one variable and substitute this to the other equation. Simplifying it will give you the value of one variable. Elimination involves writing the equations in a such a way that one variable is eliminated when they are added or subtracted. Lastly, graphing involves the plotting of point in a Cartesian plane and looking at the points where the plot of the equations intersects. 

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