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14 November, 10:05

Y varies directly with x2 and y = 48 when x = 2.

Which is the quadratic variation equation for the relationship?

Option A: y = ¼x2

Option B: y = 12x2

Option C: y = 4x

Option D: y = x2 + 25

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Answers (1)
  1. 14 November, 12:44
    0
    Y = 48 when x = 2

    y = a · x²

    48 = a · 2²

    48 = a · 4

    a = 48 : 4

    a = 12

    Answer: B) y = 12 x²
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