Systems of Equations: Choosing the Best Method

Front

What is a system of equations?

Back

A system of equations is a set of two or more equations with the same variables that are solved simultaneously.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Front

What are the three main methods for solving systems of equations?

Back

The three main methods are substitution, elimination, and graphing.

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CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Front

When is the elimination method most useful?

Back

The elimination method is most useful when the coefficients of one variable are opposites or can be easily manipulated to become opposites.

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CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Front

What is the substitution method?

Back

The substitution method involves solving one equation for one variable and then substituting that expression into the other equation.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Front

What does it mean if a system of equations has no solution?

Back

If a system has no solution, it means the lines represented by the equations are parallel and never intersect.

Tags

CCSS.8.EE.C.8A

Front

What does it mean if a system of equations has infinitely many solutions?

Back

If a system has infinitely many solutions, it means the equations represent the same line, and there are countless points of intersection.

Tags

CCSS.8.EE.C.8A

Front

How can you determine the best method to solve a system of equations?

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The best method depends on the specific equations; consider factors like the form of the equations and the coefficients.

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CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Front

What is the graphical method for solving systems of equations?

Back

The graphical method involves plotting the equations on a graph and identifying the point(s) where they intersect.

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CCSS.8.EE.C.8B

Front

What is the solution to a system of equations?

Back

The solution to a system of equations is the set of values for the variables that satisfy all equations in the system.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Front

What is a consistent system of equations?

Back

A consistent system has at least one solution, while an inconsistent system has no solutions.

Tags

CCSS.8.EE.C.8B