Substitution Method
Solving systems by substitution and verifying solutions.
Overview Substitution Method (Grade 10 Systems of Linear Equations) — Unit Overview
This Grade 10 unit teaches the learner to solve a system of two linear equations by rewriting one equation for one variable, substituting that expression into the other equation, and then verifying the ordered-pair solution in both original equations. The unit emphasizes when substitution is efficient, how it connects to earlier equation-solving skills, and how to interpret one solution, no solution, and infinitely many solutions algebraically.