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Bellringer

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Write and equation for each graph Bellringer

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5-5 Direct Variation

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A function in the form,where, is a direct variation. The constant of variation,, is the coefficient of. The variables and are said to vary directly with each other.

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Is it direct variation? To discover this, just solve for y. Find the constant of variation

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Is it direct variation? Try these please. Remember: To discover this, just solve for y. yesno

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Write the equation from a point Given point: (4, -3)

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Write the equation from a point Your turn! Point (-3, -6) Point (12, -8)

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Direct Variation Tables Use the ratio,, to tell whether y varies directly with x. Why? Since, k = If yes, then write the direct variation equation. xy

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Assignment Page 264 Numbers: 2-28 even

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