Proportional Relationships Semester Exam

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the ratio that describes how one quantity changes in relation to another in a proportional relationship.

Front

How do you find the unit rate?

Back

The unit rate is found by dividing the quantity of one item by the quantity of another item, typically expressed as a ratio of one to one.

Front

Write an equation for a proportional relationship where y is the cost and x is the number of items bought, with a constant of proportionality of 4.5.

Back

y = 4.5x

Front

What does the equation y = kx represent?

Back

This equation represents a proportional relationship where k is the constant of proportionality.

Front

Simplify the fraction 14/35.

Back

2/5

Front

Which of the following equations represents a proportional relationship: y = x/2, y = 10 + x, y = 14 - x, y = 5x + 8?

Back

y = x/2

Front

If Sherry can buy 4 pounds of oranges for $18, what is the cost per pound?

Back

The cost per pound is $4.5.

Front

What is the unit rate if 60 miles are traveled in 2 hours?

Back

The unit rate is 30 miles per hour.

Front

How can you determine if two ratios are proportional?

Back

Two ratios are proportional if they can be simplified to the same fraction.