This is a free sample. For full access
Ratio and Proportional Relationships: Introduction to Proportional Relationships
How to test proportionality
Description
How to Test Proportionality
Introduction
Not all relationships between quantities are proportional. Testing proportionality helps find out whether two quantities change together at a constant rate and follow a pred...
Show More
Transcript
You’re buying packs of markers. One pack costs $3.50, two packs cost $7, and four packs cost $14.
One way to test proportionality is to compare the ratios of cost to number of packs by finding the unit rate.
For one pack, the price is $3.50. For two packs, it is $7 ÷ 2 = $3.50. For four packs, it is $14 ÷ 4 = $3.50.
This consta...
Show More