How to Solve a System of Equations Using Elimination

The video tutorial explains how to solve a system of equations using the elimination method. It begins by introducing the concept of elimination, where one variable is eliminated by adding or subtracting equations. The tutorial guides viewers on choosing which variable to eliminate and demonstrates the process of multiplying equations to facilitate elimination. It then solves the system, revealing that there is no solution, and explains that this occurs when the lines are parallel. The video concludes by discussing how to identify parallel lines and the implications for solutions.

Describe the importance of multiplying the entire equation when using elimination.

How can you determine if two equations represent parallel lines?