8.2 Proportional Relationships, Lines, and Linear Equations

Beginning Lesson

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Domino Effect

How much is Domino’s really charging for pizza? Students use slope, y-intercept, and linear equations to explore the costs of different-sized pizzas at Domino’s and debate whether the pizza chain should be more transparent in its pricing.

Topic: Functions (F)

Middle Lesson

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Crop and Trade

Which crops should farmers grow? Students use linear relationships and proportional reasoning to explore comparative advantage and the risks and benefits of trade.

Topic: Expressions and Equations (EE)

End Lesson

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Not So Fast

How should speeding tickets be calculated? Students use linear equations to explore how police officers determine speeding fines...and whether tickets are calculated fairly.

Topic: Functions (F)