Topic 2: Mid-Topic Checkpoint

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 is constant.

Front

How can you determine if two quantities are proportional?

Back

You can determine if two quantities are proportional by checking if they have equivalent ratios.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant value (k) that relates two proportional quantities, often expressed as y = kx.

Front

If Janet buys 3 postcards for $1.05, what is the cost per postcard?

Back

The cost per postcard is $0.35.

Front

If Rosi buys 5 postcards for $1.75, what is the cost per postcard?

Back

The cost per postcard is $0.35.

Front

If Tanya buys 8 postcards for $2.80, what is the cost per postcard?

Back

The cost per postcard is $0.35.

Front

Are the costs of postcards bought by Janet, Rosi, and Tanya proportional?

Back

Yes, the costs are proportional as they all have the same cost per postcard.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

Back

Her speed is 7.5 miles per hour.

Front

What does it mean if a table shows a proportional relationship?

Back

It means that the ratios of the quantities in the table are equivalent.