WAEC Mathematics 2014 Objective — Question 27

Question 27 of 50 from the West African Examinations Council (WAEC) Mathematics 2014 Objective paper, with the correct answer and a full explanation.

The graph below is for the relation y=2x²+x−1. From the graph, what are the coordinates of the point S?

• A. (1,0.2)
• B. (1,0.4)
• C. (1,2.0)Correct
• D. (1,4.0)

Explanation

When x=1: y=2(1)²+1−1=2, giving the coordinate (1,2.0), which is point S on the graph.

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