MathematicsVariationJAMB
y varies as the square root of x, and y = 6 when x = 9. Find y when x = 25.
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Answer: A. 10
y = k√x: 6 = 3k gives k = 2; y = 2 × 5 = 10.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.