Determine if an equation is an example of direct variation

The video tutorial explains how to determine if Y varies directly with X by understanding direct variation. Direct variation can be expressed as y = K * X or y / X = K, where K is a constant. The tutorial provides an example where K equals -2, demonstrating direct variation in the form y = -2 * X.

What is the first step in determining if Y varies directly with X?

• Graph the equation

• Understand the concept of direct variation

• Identify the constant K

• Solve for X

Which of the following is a correct form of expressing direct variation?

• y = K - X

• y = X / K

• y = K * X

• y = K + X

In the equation y = K * X, what does K represent?

• A coefficient

• A variable

• A constant

• A function

What is the value of K in the example provided in the video?

• -2

• 1

• 2

• 0

How can you confirm that an equation represents direct variation?

• By checking if it can be written in the form y = K * X or y / X = K

• By solving for Y

• By finding the slope

• By graphing the equation