Writing Proportional Equations Practice

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 equation of a proportional relationship?

Back

The equation of a proportional relationship can be written in the form y = kx, where k is the constant of proportionality.

Front

What does the constant of proportionality represent?

Back

The constant of proportionality represents the unit rate or the factor by which one quantity changes in relation to another.

Front

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

Back

4

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 unit rate in a proportional relationship?

Back

The unit rate is the constant of proportionality expressed as a ratio of y to x when x equals 1.

Front

Write an equation for the total cost y of x pounds of apples if apples cost $2 per pound.

Back

y = 2x

Front

If the equation is y = 5x, what does this tell you about the relationship between y and x?

Back

This tells you that for every 1 unit increase in x, y increases by 5 units.

Front

True or False: The constant of proportionality can change depending on the situation.

Back

False

Front

What is the constant of proportionality in the equation y = 10x?

Back

10