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### 9 Cards in this Set

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 proportion a statement that shows two ratios are equal or proportional can be written in two ways 1. in numbers- 2/3=4/6 2. in words- two is to three as four is to six to creat proportions we can creat tables of equivalent ratios the write the proportions 3 6 9 12 4 8 12 16 proportions are:3/4=6/8;3/4=9/12;3/4=12/16;6/8=9/12;6/8=12/16;9/12=12/16 makes sure you read the directions four ways are- 1. 3 TV sets/2 homes=6 TV sets/4 homes 2. 2 homes/ 3 TV sets= 4 homes/6 TV sets 3. 2 homes/4 homes=3 TV sets/6 TV sets 4. 4 homes/2 homes=6 TV sets/3 TV sets four ways to write a proportion make sure your numerator and denominator match properly use labels there are many ways to check whether two ratios are proportional 1. rewrite the ratios in lowest terms a. check if they are equivalent example: 4/12=8/24 1/3=1/3 yes 2. whether the numerators or denominators are related by multiplycation example: 7/10=21/30 7/10*3=21/30= 21/30 yes 3. use a scatter plot test for proportionality a. graph the equivalent ratios b. if a straight line passes through the points and will also pass through point 0,0 it is a yes solving a proportion means finding a missing part of the proportion use unit rates to solve 1.find unit rate 2.multiply to solve the proportion