## Reflection: Developing a Conceptual Understanding Systems and Parallel Lines - Section 2: New Info

Students will define parallel lines as lines having the same slope, and they will complete the table accordingly. But they may ask about identical lines. I ask that although our commonly used definition of parallel lines being lines with the same slope, includes coincident lines, they should be distinguished by their y intercepts. Some people like to use the terms consistent and inconsistent for systems where there is at least one solution or no solution. I may or may not include these depending if I feel students have had enough vocabulary to deal with. With ELL students, I may leave these terms out.

The term "parallel"
Developing a Conceptual Understanding: The term "parallel"

# Systems and Parallel Lines

Unit 6: Systems of Linear Equations
Lesson 8 of 13

## Big Idea: Systems having 0, 1, or infinitely many solutions correspond to lines not intersecting, intersecting once, or being coincident.

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Subject(s):
Math, Algebra, Systems of Equations and Inequalities, system of equations, Parallel Lines , systems of equations, Math 8, Systems of, linear modeling
60 minutes

### Mauricio Beltre

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