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UI Post-UTME Mathematics 2021 (Model questions) Question 22

Question 22

Coordinate Geometry

Find the equation of a line which is from the origin and passes through the point (−3, −4)

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

Answer: B (y = 4x/3)

Explanation

Through the origin the gradient is −4/−3 = 4/3, so y = 4x/3.