Describe when it would be most beneficial to solve systems using graphing, substitution, and elimination. Also, describe when it might not be beneficial to use the methods.

Question

Give examples to strengthen and support your answer.

Answer 1

I assume you are asking about systems of linear equations.

The answer is a matter of opinion. Here's mine.

For systems bigger than 3x3 unless they are quite simple to solve by elimination, I believe resort to a spreadsheet which can do matrix inversion and multiplication virtually instantly is best.

For 2x2 and 3x3 systems I find elimination is easier for simple systems.

If the numbers are messy, I vote for determinants.