Proportional Relationships

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

Identify the equation that does NOT represent a proportional relationship: y = -2x, y = 1/2 x, y = 3x, y = 5x - 7.

Back

y = 5x - 7

Front

What does the constant of proportionality represent in the equation y = kx?

Back

The constant of proportionality (k) represents the ratio of y to x in a proportional relationship.

Front

In the equation y = ½x, what is the constant of proportionality?

Back

1/2

Front

What form can a proportional relationship be written in?

Back

y = kx

Front

If you travel 150 miles on 5 gallons of gas, how far do you travel per gallon?

Back

30 miles

Front

What is the formula to find the constant of proportionality?

Back

k = y/x

Front

If y = 4x, what is the constant of proportionality?

Back

4

Front

What does k represent in the equation y = kx?

Back

k represents the constant of proportionality.

Front

If a proportional relationship is graphed, what will the graph look like?

Back

The graph will be a straight line that passes through the origin.