*Essential Question: Can you use the constant of proportionality in an equation to represent a real world example?*

7.RP.2b

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**S.29 Example 1: Do we have enough gas to make it to the gas station?**

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**Discussion**

**S.30 Example 2: Andrea’s Portraits (Group Work)**

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*Essential Question: Can you use the constant of proportionality in an equation to represent a real world example?*

7.RP.2c

**[expand title=”Warm up”]**

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**Discussion**

- Which makes more sense: to use a unit rate of “ears of corn per dollar” or of “dollars/cents per ear of corn”?
- Based on the previous question, which would be the independent variable?
- Which would be the dependent variable and why?
- How do you write an equation for a proportional relationship in a generic form?

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