8.2 Proportional Relationships, Lines, and Linear Equations

Beginning Lesson

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Domino Effect

How much does Domino's charge for pizza? Students use linear functions — slope, y-intercept, and equations — to explore how much the famous pizzas really cost.

Topic: Expressions and Equations (EE), 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


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)