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Bellringer. Write and equation for each graph Bellringer.

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Presentation on theme: "Bellringer. Write and equation for each graph Bellringer."— Presentation transcript:

1 Bellringer

2 Write and equation for each graph Bellringer

3 5-5 Direct Variation

4 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.

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

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

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

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

9 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

10 Assignment Page 264 Numbers: 2-28 even


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