EZ Elementary Row Operations

What is the operation of interchanging the ith row and jth row called?

• Row Transformation

• Row Multiplication

• Row Interchange

• Row Addition

What happens when you multiply the ith row by a nonzero constant a?

• The row is eliminated

• The row is scaled

• The row is added to another

• The row is interchanged

In the operation R₁* = aR₁ + R₂, what does R₁* represent?

• The first row

• The new row

• The constant a

• The second row

Which of the following is NOT an elementary row operation?

• Interchanging rows

• Adding a multiple of one row to another

• Multiplying a row by zero

• Scaling a row

What is the result of the operation R₁* = aR₁?

• R₁ is scaled by a

• R₁ is unchanged

• R₁ is eliminated

• R₁ is interchanged

Which operation involves adding a multiple of the jth row to the ith row?

• Row Interchange

• Row Addition

• Row Transformation

• Row Scaling

If R₁ is multiplied by a nonzero constant, what is the effect on the row?

• It is eliminated

• It is scaled

• It changes its position

• It becomes zero

What does the operation R₁ ↔ R₂ refer to?

• Row Addition

• Row Elimination

• Row Interchange

• Row Scaling

Which of the following correctly describes the operation R₁ = aR₁ + R₂?

• R₁ is multiplied by a and added to R₂

• R₁ is eliminated

• R₁ is interchanged with R₂

• R₁ is scaled by a

What is the main purpose of using augmented matrices in solving systems of linear equations??

• To find determinants

• 
  To make the equations more complex

• To represent systems of equations in a compact form