Library / /101 of 475

, 2004

Algebra Difficulty 1.0 Junior Find the answer Canada

The symbol $\begin{vmatrix} a & b \\ c & d \end{vmatrix}$ equals $ad - bc$ . If $\begin{vmatrix} x-1 & 2 \\ 3 & -5 \end{vmatrix} = 9$ , the value of $x$ is

(A) $-4$ (B) $-3$ (C) $-2$ (D) $2$ (E) $4$

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.