Answer
-19
Work Step by Step
A 2x2 determinant can be calculated as $ad-bc$, where a is the upper-left entry, b is the upper-right entry, c is the lower-left entry, and d is the lower-right entry.
Therefore, the value of the determinant is $(9\times-3)-(-2\times4)=-27-(-8)=-27+8=-19$
