Direct Variation

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What is direct variation?

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What is the constant of proportionality in direct variation?

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What is the equation for direct variation?

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How can you determine if a relationship is a direct variation?

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What does a graph of a direct variation look like?

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A graph of direct variation is a straight line that passes through the origin (0,0).

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What is another name for the constant of proportionality?

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Another name for the constant of proportionality is the constant of variation.

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Yes, it shows direct variation because it is a straight line passing through the origin.

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What is the relationship between direct variation and proportionality?

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Direct variation implies proportionality; as one variable increases, the other variable increases in a constant ratio.