Answer
0
Work Step by Step
Finding the determinant of the matrix, we obtain:
$$\det \begin{pmatrix}-1&-4\\ 3&12\end{pmatrix}\\ \left(-1\right)\cdot \:12-\left(-4\right)\cdot \:3\\ 0$$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 9 Quadratic Relations and Conic Sections - 9.4 Graph and Write Equations of Ellipses - 9.4 Exercises - Mixed Review - Page 639: 55
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