CAPE Pure Mathematics Unit 1 · May/June 2012 · Paper 1 · Question Q18
The vector \begin{pmatrix} p \\ q \end{pmatrix} is perpendicular to the vector \begin{pmatrix} 3 \\ -1 \end{pmatrix}. The relationship between p and q is
- (A)
p + 3q = 0 - (B)
3p + q = 0 - (C)
p - 3q = 0 - (D)
3p - q = 0
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