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3 years ago

Brainliest if correct

Mathematics

1 answer:

patriot [66]3 years ago

7 0

Answer:

C.)

Step-by-step explanation:

Direct variation: The statement "y varies directly as x," means that when x increases, y increases by the same factor.

Use the formula y/x = k

So, A) would be...

y/x = k 1/1=1, 9/3=3, 25/5=5, 36/6=6. This is not a direct variation.

B) would be...

3/2 = 1.5, 5/4 = 1.25, 7/6 = 1.167..., 9/8 = 1.125. This is not a direct variation.

D) would be...

-1/1 = -1, 2/2 = 1, -3/3 = -1, 4/4 = 1. This wouldn't be direct variation. Even though it all equals to number 1, it still ins't, because two of them are negative, and the other two is positive. Direct variation would always equal to the same numbers. Example: If one number equals to number 5, the rest would be 5.

Lastly, C) would be...

-1/3 = -0.3..., -2/6 = -0.3..., -3/9 = -0.3..., -4/12 = -0.3... . This is a Direct Variation, because all of the answer is equal with -0.3...

Your correct answer is: C)

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Step-by-step explanation:

Assuming this complete question: "You and your brother are reading the same novel. You want to get ahead of him in the book, so you decide to read 30 minutes longer than your brother reads. Write an equation for the number of minutes you read, y, when your brother reads x number of minutes.

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Solution to the problem

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4 years ago

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shtirl [24]

Step one:
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Step two:
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a=1
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