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Mixed Review
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Translate (โ2,4) by (5,โ3).
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Reflect (3,โ7) in the x-axis.
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Reflect (โ2,5) in y=x.
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Rotate (4,1) 90ยฐ anticlockwise about origin.
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Enlarge (โ3,2) by scale factor โ2 about origin.
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Identify matrix โ1001.
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Apply 0โ110 to (2,6).
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Apply horizontal shear factor 3 to (1,2).
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State the invariant line of an x-direction stretch.
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Explain why a rotation description needs three pieces of information.
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Check Your Work
Show answers and working
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(3,1).
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(3,7).
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(5,โ2).
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(โ1,4).
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(6,โ4).
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Reflection in the y-axis.
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(โ6,2), a 90ยฐ anticlockwise rotation.
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(1+3ร2,2)=(7,2).
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The y-axis.
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Centre, angle and direction are all required to determine one unique rotation.
๐ง Learn It Visually: Mixed Review Strategy
Mixed questions test recognition before calculation. Start by comparing size, orientation, parallelism and distances.
Same orientation and size
Often a translation or rotation.
Reversed orientation
Often a reflection or a transformation involving a negative determinant.
Changed size or shape
Consider enlargement, stretch or shear.
๐ฏ Identify the Transformation
Study the object and image, then choose the most complete description.
Look at size, orientation and corresponding movements.
Think Like a Mathematician: What is the smallest set of clues needed to distinguish translation, reflection and rotation?
๐งท Remember
Recognition is only the first step; your final description must be complete.
โ ๏ธ Common Mistake
Naming the type correctly but omitting the vector, line, centre, angle or factor.
๐ฏ Exam Tip
Use one pair of corresponding vertices to test your suspected rule before committing.
Revision Guidance and Readiness
- Attempt the questions without notes first.
- Use the answers or worked solutions to identify the exact step that needs attention.
- Return to the relevant lesson, then retry missed questions.
- You are ready to move on when you can explain your method and check your result independently.