y=kx Review

Front

What is the equation for a proportional relationship?

Back

y = kx, where k is the constant of proportionality.

Front

What does the constant of proportionality (k) represent?

Back

It represents the ratio of y to x in a proportional relationship.

Front

Identify the equation that does NOT represent a proportional relationship: y = -2x, y = 3.4x, y = 3x, y = 5x - 7.

Back

y = 5x - 7 does not represent a proportional relationship.

Front

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

Back

k = 4.

Front

If y = (1/4)x, what is the value of k?

Back

k = 1/4.

Front

What is the constant of proportionality if y = 6x?

Back

k = 6.

Front

How do you determine the constant of proportionality from a table of values?

Back

Divide the value of y by the corresponding value of x.

Front

Write an equation for a situation where the constant of proportionality is 19.25.

Back

y = 19.25x.

Front

What is the constant of proportionality in miles per hour if y = 45x?

Back

k = 45.

Front

If the graph shows a straight line passing through the origin, what can be said about the relationship?

Back

It represents a proportional relationship.