Proportional Relationships

Front

What is a proportional relationship?

Back

A relationship between two quantities where the ratio of one quantity to the other is constant.

Front

What does the equation y = kx represent?

Back

It represents a proportional relationship where k is the constant of proportionality.

Front

Identify the constant of proportionality in the equation y = 3x.

Back

3

Front

Which equation represents a proportional relationship? y = 5x - 2 or y = 4x?

Back

y = 4x represents a proportional relationship.

Front

If you travel 240 miles using 8 gallons of gas, how many miles do you travel per gallon?

Back

30 miles per gallon.

Front

What does k represent in the equation y = kx?

Back

k represents the constant of proportionality.

Front

How can you determine if a relationship is proportional?

Back

Check if the ratio of y to x is constant for all pairs of values.

Front

What is the formula for finding the constant of proportionality?

Back

k = y/x.

Front

If y = 2x, what is the value of y when x = 5?

Back

y = 10.

Front

What is the graph of a proportional relationship?

Back

A straight line that passes through the origin.