Which method(s) would you use for the following system, and why?
Answer
Addition. These are too messy to graph, and there's no easy way to solve for an individual variable in order to use substitution.
Example 2
Which method(s) would you use for the following system, and why?
Answer
Substitution or addition. These are too messy to graph. We could easily solve the first equation for x or y in order to use substitution. We could also multiply the first equation by 3 and eliminate x, or by -5 and eliminate y
Example 3
Which method(s) would you use for the following system, and why?
Answer
The numbers are small, the equations simple. Any of our three methods would work here. Method #4, "guessing, " would not be as effective.
