Question

1. which method is best to solve a system of linear equations when the equations have the same coefficients on the x-term?

• elimination
• substitution
• graphing

Explanation:

To solve a system of linear equations with the same \( x \)-term coefficients, the elimination method is best. When equations have the same \( x \)-coefficients, we can subtract (or add, if signs differ) the equations to eliminate the \( x \)-variable, simplifying the process. Substitution would be more cumbersome here, and graphing is less precise and efficient for solving.

Answer:

A. elimination