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The answer depends on how the information is presented.

If in the form of a graph, it must be a straight line through the origin.

If in the form of an equation, it must be of the form y = cx.

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βˆ™ 9y ago
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βˆ™ 9y ago

If you draw a graph, you'll get a straight line that passes through the origin. If you have an equation, it must be of the form:y = kx (where "k" is any constant)

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Q: How do you know the relationship between x and y is proportional?
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