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AleksandrR [38]
3 years ago
13

I put 80 POINTS into question please answer

Mathematics
2 answers:
anzhelika [568]3 years ago
8 0
The answer is -0.4. hope this helps
juin [17]3 years ago
3 0

Answer:

-40

Step-by-step explanation:

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Suppose y varies inversely with x. Write an equation if y=7 when x=-4
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Answer:

y = -28 ÷ x

Step-by-step explanation:

The standard format of a inversely proportional equation goes by the format of y = k ÷ x. The question asks us to write an equation if y = 7 when x = -4 and y varies inversely with x.

So we substitute the values y = 7 and x = -4 in the equation y = k ÷ x

K = constant, we have to work this out

7 = k ÷ -4

7 × - 4 = k

k = - 4 × 7

k = -28

k = -28 So then we put this back into the original y = k ÷ x to find our final equation which is y = -28 ÷ x

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