Exam-style question
Try this first
After solving -1 ? 2x + 3 < 7, what final form best communicates the answer?.
- A.B5: connect the result back to the original question
- B.Use any familiar GCSE calculation even if it ignores solving linear and quadratic inequalities in a single variable…
- 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 B5: connect the result back to the original question.
- The compound inequality should be solved across all three parts and written as a single interval or equivalent set of bounds.
This answer is tied to the objective: B5 Solve linear and quadratic inequalities in a single variable and interpret such inequalities graphically, including inequalities with brackets and fractions; express solutions through correct use of and and or, or through set notation; represent linear and quadratic inequalities graphically..
Explanation
Why this works
Use the explanation to connect the worked answer back to B5 Solve linear and quadratic inequalities in a single variable and interpret such inequalities graphically, including inequalities with brackets and fractions; express solutions through correct use of and and or, or through set notation; represent linear and quadratic inequalities graphically..
The correct option, B5: connect the result back to the original question, is supported because a compound linear inequality represents one connected interval. The final answer must keep both bounds together rather than treating them as unrelated equations.
Maths method check
- Topic focus: Pure Mathematics.
- Question style: practice.
- Reasoning demand: analysis.
- 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.