(10) Tables of Proportional Relationships (7th)

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

How do you find the unit rate?

Back

To find the unit rate, divide the quantity of one item by the number of units of another item.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant ratio in a proportional relationship, often represented as k in the equation y = kx.

Front

If 5 roses cost $15, what is the cost of 1 rose?

Back

$3 per rose.

Front

How do you determine if two ratios are proportional?

Back

Two ratios are proportional if they can be simplified to the same fraction.

Front

What is the formula for finding the constant of proportionality (C.o.P.)?

Back

C.o.P. = y/x, where y is the dependent variable and x is the independent variable.

Front

If a car travels 120 miles in 2 hours, what is its speed in miles per hour?

Back

60 miles per hour.

Front

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

Back

It means that as one quantity increases, the other quantity increases at a constant rate.

Front

If 3 gallons of paint cost $45, how much would 7 gallons cost?

Back

$105.

Front

What is the relationship between unit rate and constant of proportionality?

Back

The unit rate is the constant of proportionality expressed as a ratio of one unit.