IGCSE Practice

IGCSE Co-ordinate geometry — Equation of a straight line Practice Extended

6 Cambridge IGCSE 0580 questions on equation of a straight line at the Extended tier — each with its full mark scheme. For the Core tier on the same skill, click here.

How to approach equation of a straight line — open the study guide

Equation of a straight line on IGCSE 0580

y = mx + c. Gradient m, y-intercept c. Parallel lines share m; perpendicular gradients multiply to −1.

Practice exercises

Exercise 1 — Cambridge IGCSE 0580 Nov 2025 Paper 23 Q22

Cambridge past paper 3 marks Paper 23 Nov 2025
IGCSE 0580 Nov 2025 Paper 23 Question 22 — Equation of a straight line (Extended, 3 marks)
Show mark scheme
Mark scheme for IGCSE 0580 Nov 2025 Paper 23 Q22

Exercise 2 — Cambridge IGCSE 0580 Nov 2025 Paper 41 Q17

Cambridge past paper 3 marks Paper 41 Nov 2025
IGCSE 0580 Nov 2025 Paper 41 Question 17 — Equation of a straight line (Extended, 3 marks)
Show mark scheme
Mark scheme for IGCSE 0580 Nov 2025 Paper 41 Q17

Exercise 3 — Cambridge IGCSE 0580 Jun 2025 Paper 42 Q7

Cambridge past paper 2 marks Paper 42 Jun 2025
IGCSE 0580 Jun 2025 Paper 42 Question 7 — Equation of a straight line (Extended, 2 marks)
Show mark scheme
Mark scheme for IGCSE 0580 Jun 2025 Paper 42 Q7

Exercise 4 — Cambridge IGCSE 0580 Nov 2024 Paper 41 Q8

Cambridge past paper 19 marks Paper 41 Nov 2024
IGCSE 0580 Nov 2024 Paper 41 Question 8 — Equation of a straight line (Extended, 19 marks)
Show mark scheme
Mark scheme for IGCSE 0580 Nov 2024 Paper 41 Q8

Exercise 5 — Cambridge IGCSE 0580 Jun 2024 Paper 22 Q14

Cambridge past paper 2 marks Paper 22 Jun 2024
IGCSE 0580 Jun 2024 Paper 22 Question 14 — Equation of a straight line (Extended, 2 marks)
Show mark scheme
Mark scheme for IGCSE 0580 Jun 2024 Paper 22 Q14

Exercise 6 — Cambridge IGCSE 0580 Mar 2023 Paper 42 Q6

Cambridge past paper 11 marks Paper 42 Mar 2023
IGCSE 0580 Mar 2023 Paper 42 Question 6 — Equation of a straight line (Extended, 11 marks)
Show mark scheme
Mark scheme for IGCSE 0580 Mar 2023 Paper 42 Q6

Other Co-ordinate geometry subtopics