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23 September, 00:27

The value of y varies directly with x. If x=6, then y=21. If x=10, what would be the value of y

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  1. 23 September, 03:05
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    When x = 12, y = 4.

    Explanation:

    If y ∝ x we can write that y = k ⋅ x where k is a constant of proportionality.

    Using the values given:

    6 = 18 ⋅ k ⇒ k = 1 3 y = 1 3 ⋅ 12 = 4
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