Definition
When two quantities change together in such a way that if one quantity doubles, then the other quantity also doubles, and if one quantity triples, then the other quantity also triples.
This definition is part of Fiveable's AP Calculus AB/BC review, which also has guided practice questions.
"Directly proportional" also found in:
Guided Practice
Practice AP Calculus AB/BC questionsKeep studying AP Calculus AB/BC
Connect this key term to the AP exam workflow: review the course, practice questions, and check related study tools.
AP Calculus AB/BC hub
Review units, study guides, and course resources.
AP-style practice
Check this vocabulary in multiple-choice context.
FRQ practice
Apply key concepts in written AP responses.
Score calculator
Estimate the exam score you are working toward.
Cheatsheets
Review the highest-yield facts before practice.