Find the area of the triangle with vertices (−1, −2), (2, −1), (1,3), in inches. Use the matrices and determinants

Intermediate Algebra
19th Edition
ISBN:9780998625720
Author:Lynn Marecek
Publisher:Lynn Marecek
Chapter4: Systems Of Linear Equations
Section4.6: Solve Systems Of Equations Using Determinants
Problem 278E: Explain how to decide which row or column you will use to expand a 33 determinant.
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Find the area of the triangle with vertices (−1, −2), (2, −1), (1,3), in inches. Use the matrices and determinants
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