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JAMB Mathematics 1984 Question 42

Question 42

Graphs of Functions

Find the x co-ordinates of the points of intersection of the two equations in the graph above.

Diagram for this question
  1. A.1, 1
  2. B.0, −4
  3. C.4, 9
  4. D.0, 0
  5. E.0, 4.
Show the answer and explanation

Answer: E (0, 4.)

Explanation

Set 2x + 1 = x² − 2x + 1: x² − 4x = 0, so x = 0 or 4.