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\nUse Substitution to Find the Solution of a System 8.EE.C.8\n

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\nIn this math video lesson, students learn how to use substitution to solve a system of linear equations in a clear, step-by-step way. The problem presents a system along with four possible solutions, and students are asked to determine...\nIn this math video lesson, students learn how to use substitution to solve a system of linear equations in a clear, step-by-step way. The problem presents a system along with four possible solutions, and students are asked to determine which ordered pair satisfies both equations. Because one equation is already solved for 𝑦 (in slope-intercept form), the system naturally lends itself to the substitution method. The video models how to substitute the expression for 𝑦 from the first equation directly into the second equation. This creates a single equation in one variable, with variables on both sides, which is then solved to find the value of 𝑥. Next, that value of 𝑥 is substituted back into the first equation to determine the corresponding value of 𝑦. Students see how the resulting (𝑥, 𝑦) ordered pair represents the point of intersection of the two lines—the only point both equations have in common.\n
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Resource Details

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Educator Rating
Not yet Rated
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Media Length
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4:13
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Grade
9th - 12th
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Subjects
Math
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Media Type
Instructional Videos
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Source:
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\nThe Magic Of Math\n\n
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Date
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2026
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Language
English
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Audiences
For Teacher Use
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Usage Permissions
Fine Print: Educational Use
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Concepts

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substitution, equations, magic
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Additional Tags

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common core math, test prep, sat, act, gre, math, maths, mathematics, best math videos, 8.ee.c.8, system linear equations, grade 8 math, math mcas, grade 8 math mcas, grade 8 math mcas 2025, use substitution to solve a system, solution of a system of linear equations, how to solve a system, solving systems of linear equations, when to use substitution, which ordered pair is the solution to the system, ordered pair, identify the solution of a system, answer choice, left side, pair, left, side, add 10, true, today, find, solution, system
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