Solve System of Equations by Using Substitution

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Taught by mrbrianmclogan
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Lesson Summary:

In this lesson, we learn how to solve a system of equations by using substitution. The main goal of substitution is to find the value of one variable first, and in this case, we chose y. By substituting in the value of y into the second equation, we were able to solve for x. After finding the value of x, we plugged it back into the first equation to solve for y. The solution was the intersection of the two graphs and was written as the coordinate point of 0, 1.

Lesson Description:

Solve the system of equations by using substitution

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Questions answered by this video:
  • How do I solve a system of equations using substitution?
  • How do I solve this system of equations with substitution: 5x+ y=1 3x+2y=2
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    • Currently 4.0/5 Stars.
    In this lesson, the teacher shows an example of how to solve a system of equations by using substitution.