0606/22 Feb/Mar 2026, Question 3: Sketching Cubics and Cubic Inequalities
Cambridge IGCSE Additional Mathematics 0606 · Paper 22 (Calculator) · Calculator · 4 marks
اقرأ هذا الحل مشروحاً بالعربي ←
The question, in short
Using the given cubic graph, add a straight line to the grid and use it to find the x values where the cubic exceeds 7.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 4 marks
- 1Draw the horizontal line y = 7
- 2It meets the curve at x ≈ −1.3, x ≈ −0.2 and x ≈ 3.5
- 3The curve is above the line between the first two points and to the right of the third
- 4−1.3 < x < −0.2 or x > 3.5
Answer−1.3 < x < −0.2, x > 3.5
Stuck on a step? Read the free lesson: Sketching Cubics and Cubic Inequalities
Practise more sketching cubics and cubic inequalities questions
Real 0606 past-paper questions, marked on your working like the exam, with a worked solution for every part.
Practise free on LemmaraMore past-paper questions on sketching cubics and cubic inequalities
Also searched as: 0606/22/F/M/26 · 0606_m26_qp_22 · 0606 m26 22 · question 3.
Lemmara is an independent study tool, not affiliated with or endorsed by Cambridge International Education. The worked solutions are Lemmara’s own.