DIRECT VARIATION

Front

What is direct variation?

Back

A relationship between two variables where one variable is a constant multiple of the other, expressed as y = kx.

Front

What type of relationship is a direct variation?

Back

Proportional.

Front

What does the phrase 'y varies directly with x' mean?

Back

It indicates a direct variation relationship between y and x.

Front

What does 'k' represent in the direct variation equation?

Back

Constant of proportionality.

Front

What is the equation format for direct variation?

Back

y = kx.

Front

If y = 3x, what is the value of k?

Back

k = 3.

Front

Is the relationship in the table (x: 1, y: 2; x: 2, y: 4; x: 3, y: 6) a direct variation?

Back

Yes.

Front

Is the relationship in the table (x: 1, y: 2; x: 2, y: 5; x: 3, y: 6) a direct variation?

Back

No.

Front

How can you determine if a relationship is a direct variation?

Back

Check if the ratio of y to x is constant.

Front

What is the constant of proportionality in the equation y = 5x?

Back

5.