Proportions from Tables

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

What does it mean for a table to be proportional?

Back

A table is proportional if the ratios of the values in the table are constant.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the ratio that relates two quantities in a proportional relationship.

Front

How do you determine if a table is proportional?

Back

You can determine if a table is proportional by checking if the unit rate is constant for all pairs of values.

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity.

Front

If the ratio of blue jays to robins is 10:5, how many blue jays are there if there are 255 robins?

Back

510 blue jays.

Front

What is the formula to find the constant of proportionality?

Back

k = y/x, where y is the dependent variable and x is the independent variable.

Front

What does it mean if a table does not pass through the origin?

Back

If a table does not pass through the origin, it indicates that the relationship is not proportional.

Front

Solve the proportion: 2/3 = x/9. What is x?

Back

x = 6.

Front

What is the relationship between x and y if the table shows a constant ratio?

Back

The relationship is proportional.