Exam-style question
Try this first
What is the safest exam approach for understand the effect of simple transformations on the graph…?.
- A.B9: justify each step using the relevant algebra and functions rule
- B.Use any familiar GCSE calculation even if it ignores Understand the effect of simple transformations on the graph…
- C.Write only the final answer without showing the mathematical method
- D.Change the notation or restrictions to make the algebra look simpler
Model answer
What a good answer should say
- The correct answer is B9: justify each step using the relevant algebra and functions rule.
- This option is best because link the algebraic feature to the corresponding graph feature, then checks that the notation, restrictions and conclusion match the AQA A-level Mathematics objective.
This answer is tied to the objective: B9 Understand the effect of simple transformations on the graph of y = f(x), including sketching associated graphs y = af(x), y = f(x) + a, y = f(x + a), y = f(ax), and combinations of these transformations..
Explanation
Why this works
Use the explanation to connect the worked answer back to B9 Understand the effect of simple transformations on the graph of y = f(x), including sketching associated graphs y = af(x), y = f(x) + a, y = f(x + a), y = f(ax), and combinations of these transformations..
B9: justify each step using the relevant algebra and functions rule is the correct option. It directly supports understand the effect of simple transformations on the graph… by requiring the student to link the algebraic feature to the corresponding graph feature.
The other options are weaker because they hide the reasoning, ignore restrictions, or use a generic calculation that may not fit the objective.
Maths method check
- Topic focus: Pure Mathematics.
- Question style: practice.
- Reasoning demand: understanding.
- Check the operation, notation, units, and final answer form against the question before moving on.
Common mistake
No common mistake is linked to this question yet.