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JAMB Mathematics 2007 Question 40

Question 40

Coordinate Geometry

If the lines 3y = 4x − 1 and qy = x + 3 are parallel to each other, the value of q is

  1. A.−4/3
  2. B.−3/4
  3. C.4/3
  4. D.3/4
Show the answer and explanation

Answer: D (3/4)

Explanation

The gradients are 4/3 and 1/q. Parallel lines have equal gradients, so 1/q = 4/3 and q = 3/4.