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3 years ago

If y varies directly as x, and y is 12 when x is 1.2, what is the constant of variation for this relation?

Mathematics

2 answers:

laila [671]3 years ago

6 0

If you multiply 12 by 0.1, you get 1.2. To write this as a function you would say y is x multiplied by 0.1.
y=0.1x

Andrej [43]3 years ago

5 0

Answer:

B. 10

Step-by-step explanation:

y = k x

12 = k 1.2

k = 12/1.2

k = 10

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3 years ago

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Step-by-step explanation:

In direct variation, y/x=k denotes the equation, with k being the constant of variation. Here, y is the number of square yards and x is the number of square feet. Therefore, as we know that 27 square feet = 3 square yards, we can write one point (x₁, y₁) as (27 square feet, 3 square yards). Plugging x₁ and y₁ into our equation, we get

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* because 3 is a factor of both 3 and 27, we can divide both the numerator and denominator by 3 to keep the fraction the same but also simplify it. One way to find the greatest common factor is to list the factors of each number and see the highest number that is a factor of both

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