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WAEC Further Mathematics 2017 Question 14

Question 14

Coordinate Geometry

A straight line parallel to 2x + 3y = 6, passes through the point (−1, 2). Find the equation of the line.

  1. A.2x − 3y = 2
  2. B.2x + 3y = −2
  3. C.2x + 3y = −4
  4. D.2x + 3y = 4
Show the answer and explanation

Answer: D (2x + 3y = 4)

Explanation

A parallel line is 2x + 3y = c; through (−1, 2): c = −2 + 6 = 4.