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 quantity is constant.

Front

What is the constant of proportionality?

Back

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

Front

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

Back

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

Front

Write the equation for a proportional relationship where y is 4 times x.

Back

y = 4x

Front

If y = 2x, what is the constant of proportionality?

Back

The constant of proportionality is 2.

Front

What does the equation y = 3x represent?

Back

It represents a proportional relationship where for every increase of 1 in x, y increases by 3.

Front

How can you determine if a relationship is proportional from a graph?

Back

A relationship is proportional if the graph is a straight line that passes through the origin (0,0).

Front

What is the unit rate?

Back

The unit rate is the ratio of two measurements in which the second quantity is 1.

Front

If Li runs 10 laps in 25 minutes, how many laps does she run per minute?

Back

Li runs 2/5 laps per minute.

Front

If there are 9 tennis balls in 3 cans, how many balls are in each can?

Back

There are 3 tennis balls in each can.