WAEC Mathematics 2017 Objective — Question 49

Question 49 of 50 from the West African Examinations Council (WAEC) Mathematics 2017 Objective paper, with the correct answer and a full explanation.

The graph of y=ax^2+bx+c is shown in the diagram. Find the minimum value of y

• A. A. -2.0Correct
• B. B. -2.1
• C. C. -2.3
• D. D. -2.5

Explanation

From the graph, the minimum point (vertex of the parabola) is read directly at y=-2.0.

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