ECZ 2019 · O-Level Paper 1 — Quadratic Functions

The sketch shown below represents the graph of the curve y = x² - 4x + 3, passing through the points A, B and C. Find the (ii) minimum value of y.

Verified working — step 1

The roots are x = 1 and x = 3.

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Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.

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