This presentation discusses the best methods for solving different types of systems of equations and explains why each method is best. It analyzes three sets of equations: Set A is best solved with elimination because the equations are in standard form and the y-term can be eliminated without multiplying; Set B is best solved with graphing because the equations must be in slope-intercept form to graph; Set C is best solved with substitution because one equation has x alone which can easily be substituted into the second equation.