# Why vectors QR and RQ

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The "blog" has been quiet for a while, so you decide to create a math challenge. You post the following issues and then try to address them along with the people you've been interviewing.

Explain why vectors QR and RQ are not equivalent.

Explain in your own words when the elimination method for solving a system of equations is preferable to the substitution method.

https://brainmass.com/math/vector-calculus/why-vectors-qr-and-rq-85166

#### Solution Preview

Explain why vectors QR and RQ are not equivalent.

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Because a vector is characterized by ...

#### Solution Summary

Differences between vectors QR and RQ (reverse direction of QR) are explained.

Advantages of the elimination method for solving a system of equations in comparison to the substitution method are also explored.

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