Lesson 4: Proportional and nonproportional relationships
Words to Know
Proportional: two quantities that have a constant ratio or rate
Non proportional: two quantities do not have ratios or rates that are constant
Constant of Proportionality: an equation used to describe proportional relationships
Non proportional: two quantities do not have ratios or rates that are constant
Constant of Proportionality: an equation used to describe proportional relationships
Examples
Tips
Quantities may have the same pattern, yet still not be proportional - the ratios must be equal in order to be proportional.
Extra Examples
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Problems of the Day
1. The total cost for a bunch of 9 bananas is $3.63. Write an equation relating cost to bananas.
2. How much would a bunch of 15 bananas cost?
2. How much would a bunch of 15 bananas cost?