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22 March, 07:16

If y is proportional to x and y = - 15 when x = - 20, what is the value of x when y = 12?

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  1. 22 March, 07:38
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    When y=-15, x=-20. So subtract x from y, you will get that y = 0 and x=-5. Add 12 to both and you have your answer, x=7 and y=12
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