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Name the constant of proportionality for the equation below:

y = -2/3 x

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Answer:


-(2)/(3)

Explanation:

When variable y is said to be proportional to another variable x, it is written as:


y \propto x

To introduce the equality sign, we introduce what is called the constant of proportionality, say k and write the above as:

y=kx

Comparing the given equation:


y=-(2)/(3)x

We can see that our constant of proportionality:


k=-(2)/(3)

User Tim Lowrimore
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