proportions tables

Front

If the Cross Products are equal, then..................

Back

the two ratios are proportional.

Front

Solve the proportion: 3/4 = x/12

Back

x = 9

Front

What is the constant of proportionality in the equation y = 3x?

Back

3

Front

Does the table represent a proportional relationship? (Example: x: 1, 2, 3; y: 2, 4, 6)

Back

Yes.

Front

Is this table proportional? (Example: x: 1, 2, 3; y: 2, 5, 8)

Back

No.

Front

What is a proportion?

Back

A statement that two ratios are equal.

Front

How do you find the constant of proportionality?

Back

Divide the dependent variable by the independent variable.

Front

What is the formula for a proportional relationship?

Back

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

Front

If y = 5x, what is the constant of proportionality?

Back

5

Front

What does it mean for two ratios to be proportional?

Back

It means they have the same value when simplified.