Front

What is the equation for a proportional relationship if y increases by 3 for every increase of 1 in x?

Back

y = 3x

Front

When comparing quantities, what is the correct way to express the relationship?

Back

y over x

Front

What is the constant of proportionality also known as?

Back

unit rate or unit price

Front

How can you tell if a relationship is proportional?

Back

If the ratio between the quantities is constant.

Front

If a train travels 50 miles in 1 hour, what is its speed?

Back

50 miles per hour

Front

What does a proportional relationship look like on a graph?

Back

A straight line that passes through the origin.

Front

If y = kx, what does k represent?

Back

The constant of proportionality.

Front

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

Back

30 miles per hour

Front

If the table shows (1, 3), (2, 6), (3, 9), what is the constant of proportionality?

Back

3

Front

What is the relationship between distance and time for a constant speed?

Back

Directly proportional.