ECZ 2018 · GCE Paper 1 — Coordinate Geometry
Find the equation of the line which is parallel to 2x + y = 3 and passes through (−2, 3).
- A. y = −2x + 1
- B. y = 2x + 7
- C. y = −2x − 1
- D. y = −½x + 2
Verified working — step 1
Rearranging 2x + y = 3 gives y = −2x + 3, so the gradient is −2, and a parallel line shares it. Through (−2, 3): y − 3 = −2(x − (−2)) = −2(x + 2) = −2x − 4, so 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.
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