Setting Up Equations from Word Problems: Define variables for unknowns and write equations based on relationships, e.g., $x + y = 20$ and $x – y = 10$.

Solving Systems of Linear Equations Graphically: Learn to find solutions by plotting linear equations to identify points of intersection.

Types of Solutions for Systems of Equations: Understand when systems have one solution (intersecting lines), no solution (parallel lines), or infinitely many solutions (overlapping lines).

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