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 quantity is constant.

Front

What is the constant of proportionality in the equation y = 14x?

Back

14

Front

Write the equation for the table given: If y increases by 3 for every increase of 1 in x, what is the equation?

Back

y = 3x

Front

Which equation does NOT represent a proportional relationship? y = 11x, y = x/4, y = 1/2 x, y = x + 3

Back

y = x + 3

Front

True/False: The point (4, 2) means that 4 cookies were purchased for $2.

Back

True

Front

Which equation represents a proportional relationship? y = x/2, y = 10 + x, y = 14 - x, y = 5x + 8

Back

y = x/2

Front

What does the graph of a proportional relationship look like?

Back

A straight line that passes through the origin (0,0).

Front

If y = kx, what does k represent?

Back

k represents the constant of proportionality.

Front

How do you determine if a relationship is proportional from a table of values?

Back

Check if the ratios of y to x are constant for all pairs of values.

Front

What is the formula for finding the constant of proportionality?

Back

k = y/x, where k is the constant of proportionality.