7th - Proportionality & Percents Fall 2024 Semester Review

Front

What is the constant of proportionality?

Back

The constant of proportionality is the ratio between two proportional quantities, indicating how one quantity changes in relation to another.

Front

If a raincoat costs $39.99 and has a sales tax rate of 7%, what is the final price?

Back

The final price is $42.79.

Front

How can you determine if a table of values is proportional?

Back

A table is proportional if the ratio of the values in one column to the values in another column is constant.

Front

What is the equation for a proportional relationship with a constant of proportionality of 9?

Back

The equation is y = 9x.

Front

How do you convert months to years when calculating simple interest?

Back

Divide the number of months by 12.

Front

What does it mean for two quantities to be proportional?

Back

Two quantities are proportional if they maintain a constant ratio to each other.

Front

If the constant of proportionality is 4, what is the relationship between x and y?

Back

The relationship can be expressed as y = 4x.

Front

What is the formula for calculating sales tax?

Back

Sales Tax = Price × Sales Tax Rate.

Front

How do you find the total cost including tax?

Back

Total Cost = Price + Sales Tax.

Front

What is a proportional relationship in a graph?

Back

A proportional relationship in a graph is represented by a straight line that passes through the origin.