Hello everyone, I have a problem...(adsbygoogle = window.adsbygoogle || []).push({});

I am suppose to Find the value of k for which the matrix:

A =

-4 9 14

2 7 16

-7 -2 k

has rank 2.

k = ?

I row reduced until i couldn't do it anymore and i got the following:

-4 9 14

0 23 46

0 0 92k + 2116

now i'm lost on how i'm suppose to find a value for k that will make this mantrix rank 2. ANy help would be great

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# Matrices trouble, finding k so matrix is rank 2

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