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Solving Linear Systems by Substitution
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Module 1
Quiz-Day Substitution Essentials
1
Solving Two-Step Linear Equations Using Inverse Operations
Solve two-step linear equations of the form ax + b = c using inverse operations.
Solve two-step linear equations of the form ax + b = c using inverse operations.
2
Solving Linear Systems by Substitution
Substitute an isolated expression for one variable into the other equation of a linear system and solve for the remaining variable.
Substitute an isolated expression for one variable into the other equation of a linear system and solve for the remaining variable.
3
Finding the Second Variable by Back-Substitution
Back-substitute a known variable value to find the second variable and write the solution as an ordered pair.
Back-substitute a known variable value to find the second variable and write the solution as an ordered pair.
4
Verifying Ordered-Pair Solutions by Substitution
Check whether an ordered pair solves a system by substituting it into both original equations.
Check whether an ordered pair solves a system by substituting it into both original equations.
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