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WAEC Mathematics 2009 Question 10

Question 10

Graphs of Functions

The following is the graph of a quadratic function. Find the co-ordinates of point P.

Diagram for this question
  1. A.(0, 4)
  2. B.(4, 0)
  3. C.(0, −4)
  4. D.(−4, 0)
Show the answer and explanation

Answer: A ((0, 4))

Explanation

P is where the curve y = x2 − 5x + 4 crosses the y-axis: x = 0 gives y = 4, so P is (0, 4).