Use substitution to solve systems of linear equations using substitution.
A system of equations is a set of two or more equations that have the same set of unknowns. The equations can be linear, quadratic, or any other type of equation. To solve a system of equations, you need to find the values of the unknowns that satisfy all of the equations in the system. There are many different ways to solve a system of equations, including graphing, substitution, and elimination.
Follow these steps
Rewrite one of the equations isolating one variable.
Substitute the rewritten equation into the other equation
Use substitution to find the value of the other variable.
Check your answers by plugging in the values.
I'm working through the whole Algebra 1 course. Here is a list of the videos in order I have completed so far.It should be a helpful review of the entire Algebra 1 course.
Exponents ( Whole numbers)
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Exponents with Fractions
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Scientific Notation to Standard Form
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What is an Expression in Math
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Degree of an Expression
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Convert to Standard Form
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Evaluate an Expression
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Combining like Terms
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Solving One-Variable Equations
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Introduction to Inequalities
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Compound Inequalities
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Interval Notation
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Solve System of Linear Equations by Substitution
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Solve by Elimination
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Coordinate Plane
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Domain and Range from a Graph
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Convert from Standard form to Slope Intercept Form
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Understanding Slope
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Point Slope Form
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Solve Systems Equations Graphing
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