ECZ 2016 · O-Level Paper 1 — Coordinate Geometry
Find the equation of the straight line passing through (−4, 4) and perpendicular to the straight line whose equation is y + x⁄7 = 1.
- A. y = −1⁄7 x + 32
- B. y = 7x − 24
- C. y = −7x + 32
- D. y = 7x + 32
Verified working — step 1
y + x⁄7 = 1 gives y = −1⁄7 x + 1, gradient −1⁄7. The perpendicular gradient is 7. Through (−4, 4): y − 4 = 7(x + 4) → y = …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
Have a different question?
Search it — if it is from a past paper or a school mock, chances are we have it worked out, or one that uses the same method.
Search any past-paper question