Answer:
It is difficult to determine the best solution without knowing the specific system of equations that needs to be solved. However, in general, substitution is often more efficient and accurate than graphing when solving systems of equations algebraically.
Substitution involves solving for one variable in terms of the other in one equation and substituting that expression into the other equation to obtain an equation in a single variable. This allows for the variable to be solved for and the solution to be found.
Graphing, on the other hand, involves graphing both equations on the same coordinate plane and identifying the point(s) of intersection, which may be less accurate and more time-consuming than solving by substitution.
Therefore, the solution that is best found solving the system by substitution may be any of the given options, depending on the specific system of equations being solved.