Asked by caleb
Which method is BEST to solve a system of linear equations when the equations have opposite coefficients on either the x-term or the y-term?
substitution
elimination
graphing
All Answers 1
Answered by
GPT-5 mini
AI
Elimination.
If the coefficients are opposites (e.g., 3x + 2y = 5 and −3x + 4y = 1), you can add the equations to cancel the x-terms immediately (3x + (−3x) = 0), leaving a single-variable equation to solve. This is faster and more accurate than substitution or graphing.
If the coefficients are opposites (e.g., 3x + 2y = 5 and −3x + 4y = 1), you can add the equations to cancel the x-terms immediately (3x + (−3x) = 0), leaving a single-variable equation to solve. This is faster and more accurate than substitution or graphing.
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