Define direct variation.
Understand the Problem
The question is asking for the definition of 'direct variation', which refers to a specific mathematical relationship between two variables where one is a constant multiple of the other. In this case, I will provide a clear definition of this concept.
Answer
Direct variation is a relationship between two variables in which one variable is a constant multiple of the other.
The final answer is Direct variation is a relationship between two variables in which one variable is a constant multiple of the other.
Answer for screen readers
The final answer is Direct variation is a relationship between two variables in which one variable is a constant multiple of the other.
More Information
In direct variation, the ratio of the two variables remains constant. For example, if y varies directly as x, then y = kx for some constant k, called the constant of variation.
Tips
A common mistake is confusing direct variation with inverse variation. In inverse variation, the product of the two variables is constant, not the ratio.
Sources
- Purplemath - Direct Variation - purplemath.com
- Khan Academy - Direct Variation - khanacademy.org
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