MathematicsCoordinate geometryJAMB
The points (1, 2), (2, 4) and (3, k) lie on a straight line. Find k.
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Answer: B. 6
The gradient from (1, 2) to (2, 4) is 2, so k = 4 + 2 = 6.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.