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12 April, 09:03

Suppose y varies directly with x. If y=4 when x=-2, find x when y=6

A. - 1/3

B. 3

C. 1/3

D. - 3

+4
Answers (1)
  1. 12 April, 11:31
    0
    The value of x is - 3

    Step-by-step explanation:

    ∵ y ∝ x ⇒ y = kx

    ∵ y = 4 when x = - 2

    ∴ 4 = - 2 k ⇒ k = - 2

    ∴ y = - 2 x

    ∵ y = 6

    ∴ 6 = - 2 x

    ∴ x = 6/-2 = - 3
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