Free Vectors PDF Worksheets & Answers
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Explanation:
A column vector writes horizontal movement on top (+ right, − left) and vertical movement on the bottom (+ up, − down). In geometric vector diagrams, going against an arrow reverses the sign (BA = −AB), and to travel from A to B via O you add the vectors: AB = AO + OB = −a + b = b − a.
Two vectors are parallel if one is a scalar multiple of the other (for example, 2a + 4b = 2(a + 2b) is parallel to a + 2b).
Example 1: Given column vectors a = (4, −1) and b = (−2, 5), work out 3a − 2b.
Solution:
Example 2: In ▵OAB, OA = 2a and OB = 4b. M is the midpoint of AB. Find OM in terms of a and b.
Solution:
GCSE Past Paper Vectors Questions & Answers
Worked Solution & Mark Scheme (3 marks)
⇒ (2, −3). A1
On the same grid, draw the vector -3q. [2 marks]
Worked Solution & Mark Scheme (4 marks)
From start point, move 6 grid squares left and 9 grid squares up, with arrow pointing top-left. A1