24-25 G7 Unit 3 Test Review - Ratios and Proportions

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, expressed as 'a to b' or a:b.

Front

What is a proportion?

Back

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

Front

Define constant of proportionality.

Back

Front

Write the equation for total cost (c) based on hours (h) if the cost per hour is $45.

Back

c = 45h.

Front

How do you calculate commission?

Back

Commission is calculated by multiplying the total sales amount by the commission rate.

Front

What is the formula for percent error?

Back

Front

If a table shows values that do not maintain a constant ratio, is it proportional or not proportional?

Back

Not proportional.

Front

What is the relationship between hours worked and total cost in a proportional relationship?

Back

As the number of hours increases, the total cost increases at a constant rate.

Front

How do you find the constant of proportionality from a table of values?

Back

Divide the dependent variable (y) by the independent variable (x) for any pair of values.

Front

What does it mean if a relationship is proportional?

Back

It means that the ratio of the two quantities remains constant.