Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Joint, Direct and Inverse Variation
Twenty-nine problems present a variety of practice working with direct, inverse and joint 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...
Lawrence Hall of Science
The Math Page: Skill in Algebra: Variation
Here is a site that clearly and thoroughly explains direct and inverse variation. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to students who have been...
CK-12 Foundation
Ck 12: Algebra: Ratio, Proportion, and Variation
[Free Registration/Login may be required to access all resource tools.] Understand direct and inverse variation.
Purple Math
Purplemath: Variation Equations
Purplemath offers an extensive explanation of direct and inverse variation, containing several examples and real-world applications.
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...
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Variations
Twenty-three problems cover a variety of topics applied to variations. 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 to check...
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Combined Variation
Find a quick, concise explanation of Combined Variation. Hyperlinks are available to explain how variables can vary directly and inversely.
Texas Instruments
Texas Instruments: Direct, Inverse, and Joint Variation
This set of questions pertains to direct, inverse, and joint variation. Students are asked to recognize equations of each type and to solve applications problems. Solutions and explanations are included.
Math Planet
Math Planet: Algebra 2: Rational Expressions: Variation
Provides an explanation and examples of variation.
Texas Instruments
Texas Instruments: Numb3 Rs: Barging In
Based off of the hit television show NUMB3RS, this lesson exposes students to equations of variation (direct, inverse, and joint) in the real world, as well as having students work with such equations in the real world context. The...
CK-12 Foundation
Ck 12: Algebra: Graphs of Rational Functions Study Guide
This comprehensive study guide highlights the main terms and formulas needed to understand graphs of rational functions. Examples are included.
Varsity Tutors
Varsity Tutors: Hotmath: Graphing Calculator Practice Problems: Proportions
Practice using your graphing calculator for solving proportion problems. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under each problem.
University of Illinois
University of Illinois: Quadratic Formula
This site from the University of Illinois offers an excellent simulation of the quadratic formula, where you can type in different values for a, b, and c, and then view the change in the answer for x.
CK-12 Foundation
Ck 12: Algebra: Scale and Indirect Measurement Applications
[Free Registration/Login may be required to access all resource tools.] Learn how to solve problems using scale and indirect measurement.