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4. Label the following as "proportional" or "non-proportional". y = -9x

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4 votes

Answer:

y = -9x

is labelled as proportional.

Step-by-step explanation:

Given

y = -9x

Suppose y is directly proportional to x, we have the equation:

y = kx

where k is constant.

Here, k is -9, therefore, this is proportional, and is precisely a direct proportion

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