Master writing a direct variation equation given y and x varying directly

The video tutorial explains how to determine the equation for direct variation between two variables, X and Y, and how to find the constant K. It provides examples of solving for K using given values of X and Y, including handling fractions. The tutorial concludes with a final example, reinforcing the concept of direct variation and the calculation of the constant K.

Explain how to solve for K when given a fraction in the equation.

What is the direct variation equation when K is -15?