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iris [78.8K]
3 years ago
10

If y varies inversely as x, and y=1 as x=2 find y for the x- value of -1

Mathematics
1 answer:
Lina20 [59]3 years ago
3 0
Inverse variation is of the form y=k/x  (direct variation is of the form y=kx)

We are given that x=2 when y=1 so using the inverse form y=k/x we can solve for the constant of variation...

1=k/2

k=2

so the equation is:

y=2/x  now they want us to find y when x=-1 so

y=2/-1

y=-2
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Answer:

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Step-by-step explanation:

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8 0
3 years ago
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Subtracting the left side, we have

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7 0
3 years ago
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Ipatiy [6.2K]

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see explanation

Step-by-step explanation:

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(b)

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Multiply each term in the parentheses by 2x:- 

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7 0
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AnnyKZ [126]

Answer:

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...

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