Transformations of Shapes: WJEC GCSE Foundation June 2018 Unit 1 Q18

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Foundation June 2018 Unit 1 Q18

WJECFoundationCurrent spec5 marksTransformations of Shapes

18.

(a) Reflect the shape S in the line \(y = 1\). [2]

(b) Describe fully the single transformation that transforms shape S to shape T. [3]

Mark scheme (a)

Scheme	Marks	Comments
Correct reflection in y = 1.	B2	B1 for correct reflection in x = 1 OR B1 for sight of line y = 1

Mark scheme (b)

Scheme	Marks	Comments
Clockwise rotation of 90(°) about the origin.	B3	For all four components. Accept anticlockwise rotation of 270° about the origin. B2 for any three. B1 for any two. ‘Origin’ may be stated as e.g. (0,0) or 0 or O. Do not accept ‘turn’ for rotation. Allow for ‘about the origin’ any reference to the origin. e.g. ‘in the origin’, ‘around the origin’, ‘from (0,0)’ etc. If not a single transformation (e.g. ‘clockwise rotation of 90 and then …..) penalise −1 mark from any marks gained. (Above example gains B2 −1 = 1 mark.)