Unit 3: Flashcard # 1 Review - Proportional Relationships

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 in the equation y = 5x?

Back

The constant of proportionality is 5.

Front

How do you find the unit rate?

Back

To find the unit rate, divide the total amount by the number of units. For example, $97.50 for 15 pizzas gives a unit rate of $6.50 per pizza.

Front

Is 1:2 equivalent to 2:3?

Back

No, 1:2 is not equivalent to 2:3.

Front

How do you calculate speed?

Back

Speed is calculated by dividing the distance traveled by the time taken. For example, 182.4 miles in 3 hours gives a speed of 60.8 miles per hour.

Front

What does it mean if two ratios are equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity of one.

Front

If y = kx, what does k represent?

Back

In the equation y = kx, k represents the constant of proportionality.

Front

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

Back

A relationship is proportional if the ratios of corresponding values are constant.

Front

What is the formula for finding the constant of proportionality?

Back

The constant of proportionality can be found using the formula k = y/x, where y is the dependent variable and x is the independent variable.