Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Inverse and Direct Variation
Twenty problems present a variety of practice with inverse and direct variation. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Direct and Indirect Variation
Dr. Math addresses the difference between direct and indirect variation. The Dr. gives several examples through his explanation, using real-world scenarios. The Dr. describes how problems are typically stated for indirect variation and...
Purple Math
Purplemath: Variation Equations
Purplemath offers an extensive explanation of direct and inverse variation, containing several examples and real-world applications.