KadinR387781 KadinR387781

25-10-2022
Mathematics

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y varies inversely as x. y=12 when x=7. Find y when x=2

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NathinB569973 NathinB569973

25-10-2022

We write as an inverse proportion first then make an equation by multiplying by k:

[tex]y=\frac{k}{x}\Rightarrow k=x\times y[/tex]

Find the value of k:

[tex]k=7\times12=84[/tex]

Then, when x = 2, y is:

[tex]y=\frac{84}{2}=42[/tex]

Answer: y = 42

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