Graphing is good to graph a line. Substitution is good because you have to subtitute the value whichis easy and elimination is good just to find oone variable first and the other variable
Graphing is a good method when you have small integers or fractions as your slope. Substitution is a good method when you have two equations, and when one of the coefficient of the variables is one. Linear combinations is a good method when you have the same coefficient for the same variable in 2 different equations.
Graphing is ideal for visualizing solutions of simple two-variable systems, substitution works well when an equation can easily be isolated for a variable, and linear combinations are preferred when working with equations that have matching coefficients. Each method has its strengths based on the complexity and number of variables involved in the system of equations.
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