Matrices and Row Operations Answers

a = , b = , c = , d =

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This system .

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Multiply row 2 by 2, and insert it for row 2:

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a = , b = , c = , d =

Add row 2 to row 1:

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Multiply row 2 by 2, and insert it for row 2:

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a = , b = , c = , d =

⇒ 0

Multiply row 1 by the reciprocal of 4.

Multiply row 2 by 2, and insert it for row 2:

Which operation would make the first element in row 2 equal 0?

⇒ -4