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Which rows form the inverse of the matrix with rows (3, 1) and (5, 2)?
A(2, 1) and (5, 3)
B(-2, 1) and (5, -3)
C(3, -1) and (-5, 2)
D(2, -1) and (-5, 3)
Answer & Solution
Correct answer: D. (2, -1) and (-5, 3)
The determinant is 6 - 5 = 1, so the inverse is the adjoint with rows (2, -1) and (-5, 3).
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