Which of the following vectors is perpendicular to \(\begin{pmatrix} -1 & 3 \end{pmatrix}\)?
FURTHER MATHEMATICS
WAEC 2019
Which of the following vectors is perpendicular to \(\begin{pmatrix} -1 & 3 \end{pmatrix}\)?
- A. \(\begin{pmatrix} -3 & 1 \end{pmatrix}\)
- B. \(\begin{pmatrix} 1 & 3 \end{pmatrix}\)
- C. \(\begin{pmatrix} 1 & -3 \end{pmatrix}\)
- D. \(\begin{pmatrix} 1 & 3 \end{pmatrix}\)
Correct Answer: A. \(\begin{pmatrix} -3 & 1 \end{pmatrix}\)
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