Question

Please help!! 40 points!

If k=...then what is-k?

Answer 1

The answer is C.
-k just means the opposite of the k values

Answer 2

The value of the matrix -k in the expression is $\left[\begin{array}{ccc}2&-9&8\\-7&-11&-6\\-4&-4&3\end{array}\right]$

How to evaluate the expression?

The matrix is given as:

$k = \left[\begin{array}{ccc}-2&9&-8\\7&11&6\\4&4&-3\end{array}\right]$

Multiply both sides by -1

$-1 * k = -1 * \left[\begin{array}{ccc}-2&9&-8\\7&11&6\\4&4&-3\end{array}\right]$

Evaluate the right hand side

$-1 * k = \left[\begin{array}{ccc}2&-9&8\\-7&-11&-6\\-4&-4&3\end{array}\right]$

Evaluate the left hand side

$-k = \left[\begin{array}{ccc}2&-9&8\\-7&-11&-6\\-4&-4&3\end{array}\right]$

Hence, the value of -k in the expression is $\left[\begin{array}{ccc}2&-9&8\\-7&-11&-6\\-4&-4&3\end{array}\right]$

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