If is a non-zero vector

MATHEMATICS · Single correct · A Level · Mathematics · Vectors · Vectors

Problem

\mathbf{a}

is a non-zero vector, which statement correctly describes the direction of

-3\mathbf{a}

? (a) Same as the direction of

\mathbf a

(b) Perpendicular to the direction of

\mathbf a

\mathbf a

(d) Undefined because its magnitude is zero