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WAEC Mathematics 1991 (August) Question 21

Question 21

Graphs of Functions

Use the diagram below. Find the coordinates of point B.

Diagram for this question
  1. A.(0, 1½)
  2. B.(0, 2)
  3. C.(2, 0)
  4. D.(1½, 2)
  5. E.(1½, 0)
Show the answer and explanation

Answer: E ((1½, 0))

Explanation

B is where 4x + 3y = 6 meets the x-axis: put y = 0, so 4x = 6 and x = 1½. B = (1½, 0).