I can solve equations using matrices (finding the inverse method etc), and in my textbook at the moment it sometimes gives questions where the determinant is zero,I understand what that means, and I can spot whether the equations are inconsistent, the same thing (just multiplied by a number), or several distinct lines, but sometimes, they form prisms. My question is: how can you tell from the equations that they form a prism?(adsbygoogle = window.adsbygoogle || []).push({});

Here is an example question from my book...

Solve:

[tex]\left(\begin{array}{ccc}1&1&1\\2&3&-4\\5&8&-13\end{array}\right)[/tex]x[tex]\left(\begin{array}{c}x&y&z\end{array}\right)[/tex]=

[tex]\left(\begin{array}{c}4&3&8\end{array}\right)[/tex]

edit: Sorry about thedodge matrices, its my first time doing them.

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# Homework Help: 3 x 3 Matrices, and solving a series of equations.

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