Proportional Relationships Review

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

Define constant of proportionality.

Back

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

Front

How do you find the constant of proportionality from a table of values?

Back

To find the constant of proportionality, divide the value of y by the corresponding value of x for any pair of values.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

If Daniel walked 2/5 mile in 1/4 hour, how do you calculate his speed?

Back

Speed = (2/5) / (1/4) = (2/5) * (4/1) = 1.6 miles per hour.

Front

What does it mean if a relationship is not proportional?

Back

If a relationship is not proportional, the ratio of the two quantities is not constant.

Front

How can you determine if a table represents a proportional relationship?

Back

A table represents a proportional relationship if the ratios of y to x are the same for all pairs of values.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

If a store sees 120 customers in 8 hours, how do you find the number of customers per hour?

Back

Divide the total number of customers by the total hours: 120 / 8 = 15 customers per hour.

Front

What is the ratio of 441 to 630?

Back

The ratio of 441 to 630 is 441:630, which simplifies to 7:10.