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Anastasy [175]
3 years ago
12

If x and y vary directly, and x=10 when y=3, what will be the value of x when y=9?

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
3 0

As x and y vary directly then <span>x∝y</span> i.e. <span>x=ky</span>, where k is a constant.

When <span>x=24</span>, <span>y=8</span> i.e. <span>24=k×8</span> and therefore

<span>k=<span>248</span>=3</span>

and relation between x and y is hence <span>x=3y</span>

and when <span>y=9</span>, <span>x=3×9=27</span>.



I hope this is what you're looking for.

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