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8 September, 09:47

If y varies directly as x and y=7 when x=5 what is the value of y when x=15

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  1. 8 September, 10:04
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    y=21 when x = 15

    Step-by-step explanation:

    Since you multiply 5 by 3 to get 15, you also multiply 7 by 3. Therefore y=21
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