Proportional Constant & Unit Rates

Front

A proportional relationship can be written as an equation in the form ____ = _____  _____

Back

y = kx

Front

What is the constant of proportionality in the equation y = 14x?

Back

14

Front

Does the equation y = 3x + 2 show a proportional relationship?

Back

No

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 a car travels 150 miles in 3 hours, what is the unit rate in miles per hour?

Back

50 miles per hour

Front

What does the constant of proportionality represent in a proportional relationship?

Back

It represents the factor by which one quantity is multiplied to obtain the other quantity.

Front

In the equation y = kx, what does 'k' represent?

Back

The constant of proportionality.

Front

If the constant of proportionality is $4, what is the value of y when x = 5?

Back

$20

Front

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

Back

Check if the ratio of y to x is constant for all pairs.

Front

What is the unit rate of 60 miles in 2 hours?

Back

30 miles per hour