IGCSE Practice

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

7 Cambridge IGCSE 0580 questions on equation of a straight line at the Core tier — each with its full mark scheme. For the Extended 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 Specimen 2025 Paper 11 Q16

Cambridge past paper 11 marks Paper 11 Specimen 2025
IGCSE 0580 Specimen 2025 Paper 11 Question 16 — Equation of a straight line (Core, 11 marks)
Show mark scheme
Mark scheme for IGCSE 0580 Specimen 2025 Paper 11 Q16

Exercise 2 — Cambridge IGCSE 0580 Nov 2025 Paper 32 Q25

Cambridge past paper 5 marks Paper 32 Nov 2025
IGCSE 0580 Nov 2025 Paper 32 Question 25 — Equation of a straight line (Core, 5 marks)
Show mark scheme
Mark scheme for IGCSE 0580 Nov 2025 Paper 32 Q25

Exercise 3 — Cambridge IGCSE 0580 Mar 2025 Paper 12 Q17

Cambridge past paper 4 marks Paper 12 Mar 2025
IGCSE 0580 Mar 2025 Paper 12 Question 17 — Equation of a straight line (Core, 4 marks)
Show mark scheme
Mark scheme for IGCSE 0580 Mar 2025 Paper 12 Q17

Exercise 4 — Cambridge IGCSE 0580 Nov 2025 Paper 31 Q21

Cambridge past paper 3 marks Paper 31 Nov 2025
IGCSE 0580 Nov 2025 Paper 31 Question 21 — Equation of a straight line (Core, 3 marks)
Show mark scheme
Mark scheme for IGCSE 0580 Nov 2025 Paper 31 Q21

Exercise 5 — Cambridge IGCSE 0580 Nov 2025 Paper 33 Q26

Cambridge past paper 3 marks Paper 33 Nov 2025
IGCSE 0580 Nov 2025 Paper 33 Question 26 — Equation of a straight line (Core, 3 marks)
Show mark scheme
Mark scheme for IGCSE 0580 Nov 2025 Paper 33 Q26

Exercise 6 — Cambridge IGCSE 0580 Jun 2025 Paper 31 Q12

Cambridge past paper 2 marks Paper 31 Jun 2025
IGCSE 0580 Jun 2025 Paper 31 Question 12 — Equation of a straight line (Core, 2 marks)
Show mark scheme
Mark scheme for IGCSE 0580 Jun 2025 Paper 31 Q12

Exercise 7 — Cambridge IGCSE 0580 Nov 2024 Paper 32 Q8

Cambridge past paper 15 marks Paper 32 Nov 2024
IGCSE 0580 Nov 2024 Paper 32 Question 8 — Equation of a straight line (Core, 15 marks)
Show mark scheme
Mark scheme for IGCSE 0580 Nov 2024 Paper 32 Q8

Other Co-ordinate geometry subtopics