if y varies directly as X ad Y=7 when X=-5, find Y when X is 20

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17-05-2018
Mathematics

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if y varies directly as X ad Y=7 when X=-5, find Y when X is 20

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angicarl angicarl · Answer 1 · 2018-05-17T00:25:16+02:00

angicarl angicarl

17-05-2018

Y would equal -28 when X equals 20.

Since they vary directly, all you do is divide 20 by -5 to find the variation between X and Y. You will get -4 which you multiply to 7, to get you final answer. Thus making Y equal to -28.

I hope this helps!

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