Shape and Space 8

3 marks · Normal

In triangle PQR, , . Find the vector in column vector form and explain your reasoning.

Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.

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Must show: Adds and , Correct working with components

Also accept: Written explanations that state adding the two vectors in sequence

Common mistakes: Subtracting instead of adding

Show mark scheme and worked solution

Marking points

M1 · 1 mark · States

M2 · 1 mark · Adds each component: (4+2, 1+5)

A1 · 1 mark · Gives column vector with working

Worked solution

Starting at P, moving along PQ and then QR gets you to R. So: