Elimination by Adding or Subtracting

When using the elimination method, what should be the goal when adding or subtracting the equations?

• To eliminate one of the variables

• To multiply the equations

• To square the equations

• To divide the equations

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the first step in solving a system of linear equations using the elimination method?

• Divide the variables by the same number

• Align the variables by making the coefficients the same

• Ignore one of the variables

• Substitute the variables with random values

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the next step after adding or subtracting the equations in the elimination method?

• Graph the equations to find the solution

• Solve for the remaining variable

• Divide the equations by a random number

• Multiply the equations by a random number

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the final step in solving a system of linear equations using the elimination method?

• Substitute the value found into one of the original equations to solve for the remaining variable

• Multiply both equations by a random number

• Divide both equations by a random number

• Add the two equations together without eliminating any variables

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

To eliminate a variable in the system, should you add the equations or subtract the equations?

• Add

• Subtract

• Neither

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the purpose of multiplying the equations in the elimination method?

• To waste time and effort

• To confuse the person solving the equations

• To make the equations look more complicated

• To create opposite coefficients for one of the variables

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which is the best method for solving this system of equations?

-4x-2y=-12

4x+8y=-24

• Substitution

• Elimination

• Graphing

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Should you use the Substitution or Elimination method to solve this system of equations?

• Substitution

• Elimination

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Elimination Method

A method for _____ systems of equations by _____ or _____ to climate a variable.

• Adding,

  multiplying, dividing

• Making,

  subtracting, adding

• Solving,

  adding, subtracting

• Solving,

  multiplying,dividing

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve for "x"

y= 3x+4

y= x-2

• 7

• 4

• 6

• 3

Tags

CCSS.HSA.REI.C.9