Direct Variation

Direct Variation

What is direct variation?

• Direct variation describes a simple relationship between two variables . We say y varies directly with x (or as x , in some textbooks) if: y=kx. for some constant k , called the constant of variation or constant of proportionality 

Examples of Direct Variation

• The number of hours you work DIRECTLY impacts the amount of money you make

• The amount of weight on a spring DIRECTLY impacts the distance the spring will stretch

• The speed of a car DIRECTLY impacts the distance traveled in a certain amount of time.