Answer
Determinant is -6, must have inverse
Work Step by Step
After plugging this into the calculator, we see that the determinant is $-6$. This is non-zero so there must be an inverse
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter 6, Matrices and Determinants - Section 6.4 - Determinants and Cramer's Rule - 6.4 Exercises - Page 534: 29
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