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# Proportional relationships: spaghetti

CCSS.Math:

## Video transcript

the following table describes the relationship between the number of servings of spaghetti bolognese I don't know if I'm pronouncing that our Bolognese and the number of tomatoes needed to prepare them test the ratios for equivalence and determine whether the relationship is proportional well you have a proportional relationship between the number of servings in the number of tomatoes is if the ratio of the number of servings to the number of tomatoes is always the same or if the ratio of the number of tomatoes to the number of servings is always the same so let's just think about the ratio of the number of tomatoes to the number of servings so it's 10 - 6 which is the same thing as 5 2 3 so here the ratio is 5 to 3 it's 15 to 9 if you divide both of these by 3 you get 5 - 3 so it's the same ratio 15 - 25 if you divide both of these by 5 you get 5 - 3 so based on this data it looks like the ratio between the number of tomatoes and the number of servings is always constant so yes this relationship is proportional